diff --git a/keyboards/handwired/promethium/config.h b/keyboards/handwired/promethium/config.h
index ea5f2b76e8c..dca0aec2e4e 100644
--- a/keyboards/handwired/promethium/config.h
+++ b/keyboards/handwired/promethium/config.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef CONFIG_H
-#define CONFIG_H
+#pragma once
 
 #include "config_common.h"
 
@@ -159,27 +158,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MAX_VOLTAGE 4.2
 #define MIN_VOLTAGE 3.2
 
-#define ___ KC_NO
-
-#define KEYMAP_CUSTOM( \
-    k11, k12, k13, k14, k15, k16,      k17, k18, k19, k1a, k1b, k1c, \
-    k21, k22, k23, k24, k25, k26,      k27, k28, k29, k2a, k2b, k2c, \
-    k31, k32, k33, k34, k35, k36,      k37, k38, k39, k3a, k3b, k3c, \
-    k41, k42, k43, k44, k45, k46,      k47, k48, k49, k4a, k4b, k4c, \
-                             tp1, tp2, tp3 \
-) \
-{ \
-    {k11, k12, k13, k14, k15, k16}, \
-    {k21, k22, k23, k24, k25, k26}, \
-    {k31, k32, k33, k34, k35, k36}, \
-    {k41, k42, k43, k44, k45, k46}, \
-    {k17, k18, k19, k1a, k1b, k1c}, \
-    {k27, k28, k29, k2a, k2b, k2c}, \
-    {k37, k38, k39, k3a, k3b, k3c}, \
-    {k47, k48, k49, k4a, k4b, k4c}, \
-    {tp1, tp2, tp3, ___, ___, ___}  \
-}
-
 #ifndef __ASSEMBLER__ // assembler doesn't like enum in .h file
 enum led_sequence {
   LED_IND_LINUX,
@@ -351,6 +329,3 @@ enum led_sequence {
 #define PS2_USART_ERROR         (UCSR1A & ((1<<FE1) | (1<<DOR1) | (1<<UPE1)))
 #define PS2_USART_RX_VECT       USART1_RX_vect
 #endif
-
-
-#endif
diff --git a/keyboards/handwired/promethium/info.json b/keyboards/handwired/promethium/info.json
new file mode 100644
index 00000000000..2742ffa641b
--- /dev/null
+++ b/keyboards/handwired/promethium/info.json
@@ -0,0 +1,68 @@
+{
+  "keyboard_name": "Promethium51",
+  "url": "",
+  "maintainer": "qmk",
+  "width": 16,
+  "height": 5,
+  "layouts": {
+    "LAYOUT": {
+      "layout": [
+        { "label": "k11", "x": 0, "y": 0.50 },
+        { "label": "k12", "x": 1, "y": 0.30 },
+        { "label": "k13", "x": 2, "y": 0.15 },
+        { "label": "k14", "x": 3, "y": 0 },
+        { "label": "k15", "x": 4, "y": 0.15 },
+        { "label": "k16", "x": 5, "y": 0.15 },
+        { "label": "k17", "x": 10, "y": 0.15 },
+        { "label": "k18", "x": 11, "y": 0.15 },
+        { "label": "k19", "x": 12, "y": 0 },
+        { "label": "k1a", "x": 13, "y": 0.15 },
+        { "label": "k1b", "x": 14, "y": 0.30 },
+        { "label": "k1c", "x": 15, "y": 0.50 },
+
+        { "label": "k21", "x": 0, "y": 1.50 },
+        { "label": "k22", "x": 1, "y": 1.30 },
+        { "label": "k23", "x": 2, "y": 1.15 },
+        { "label": "k24", "x": 3, "y": 1 },
+        { "label": "k25", "x": 4, "y": 1.15 },
+        { "label": "k26", "x": 5, "y": 1.15 },
+        { "label": "k27", "x": 10, "y": 1.15 },
+        { "label": "k28", "x": 11, "y": 1.15 },
+        { "label": "k29", "x": 12, "y": 1 },
+        { "label": "k2a", "x": 13, "y": 1.15 },
+        { "label": "k2b", "x": 14, "y": 1.30 },
+        { "label": "k2c", "x": 15, "y": 1.50 },
+
+        { "label": "k31", "x": 0, "y": 2.50 },
+        { "label": "k32", "x": 1, "y": 2.30 },
+        { "label": "k33", "x": 2, "y": 2.15 },
+        { "label": "k34", "x": 3, "y": 2 },
+        { "label": "k35", "x": 4, "y": 2.15 },
+        { "label": "k36", "x": 5, "y": 2.15 },
+        { "label": "k37", "x": 10, "y": 2.15 },
+        { "label": "k38", "x": 11, "y": 2.15 },
+        { "label": "k39", "x": 12, "y": 2 },
+        { "label": "k3a", "x": 13, "y": 2.15 },
+        { "label": "k3b", "x": 14, "y": 2.30 },
+        { "label": "k3c", "x": 15, "y": 2.50 },
+
+        { "label": "k41", "x": 0, "y": 3.50 },
+        { "label": "k42", "x": 1, "y": 3.30 },
+        { "label": "k43", "x": 2, "y": 3.15 },
+        { "label": "k44", "x": 3, "y": 3 },
+        { "label": "k45", "x": 4, "y": 3.15 },
+        { "label": "k46", "x": 5, "y": 3.15 },
+        { "label": "k47", "x": 10, "y": 3.15 },
+        { "label": "k48", "x": 11, "y": 3.15 },
+        { "label": "k49", "x": 12, "y": 3 },
+        { "label": "k4a", "x": 13, "y": 3.15 },
+        { "label": "k4b", "x": 14, "y": 3.30 },
+        { "label": "k4c", "x": 15, "y": 3.50 },
+
+        { "label": "tp1", "x": 6.5, "y": 3.15 },
+        { "label": "tp2", "x": 7.5, "y": 3.15 },
+        { "label": "tp3", "x": 8.5, "y": 3.15 }
+      ]
+    }
+  }
+}
diff --git a/keyboards/handwired/promethium/keymaps/default/config.h b/keyboards/handwired/promethium/keymaps/default/config.h
index 2064f3676a7..0630fd43e38 100644
--- a/keyboards/handwired/promethium/keymaps/default/config.h
+++ b/keyboards/handwired/promethium/keymaps/default/config.h
@@ -1,7 +1,4 @@
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
-
-#include "../../config.h"
+#pragma once
 
 #define PRIYADI_PROMETHIUM
 
@@ -23,5 +20,3 @@
 
 #define DOUBLESPACE_LAYER_ENABLE
 // #define TOLELOT_ENABLE
-
-#endif
diff --git a/keyboards/handwired/promethium/keymaps/default/keymap.c b/keyboards/handwired/promethium/keymaps/default/keymap.c
index e229b67e541..a1ca79f9a94 100644
--- a/keyboards/handwired/promethium/keymaps/default/keymap.c
+++ b/keyboards/handwired/promethium/keymaps/default/keymap.c
@@ -686,7 +686,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * | Ctrl | Alt  | GUI  | Punc | Num  |    Space    | Fun  |Greek | GUI  |AltGr | Ctrl |
  * `-----------------------------------------------------------------------------------'
  */
-[_QWERTY] = KEYMAP_CUSTOM(
+[_QWERTY] = LAYOUT(
   KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,
   KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_QUOT, KC_ENT ,
   KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,
@@ -706,7 +706,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * `-----------------------------------------------------------------------------------'
  */
 #ifdef LAYOUT_DVORAK
-[_DVORAK] = KEYMAP_CUSTOM(
+[_DVORAK] = LAYOUT(
   _______, KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    _______,
   _______, KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    _______,
   _______, KC_SLSH, KC_Q,    KC_J,    KC_K,    KC_X,    KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    _______,
@@ -728,7 +728,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  */
 
 #ifdef LAYOUT_COLEMAK
-[_COLEMAK] = KEYMAP_CUSTOM(
+[_COLEMAK] = LAYOUT(
   _______, KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,    KC_J,    KC_L,    KC_U,    KC_Y,    KC_QUOT, _______,
   _______, KC_A,    KC_R,    KC_S,    KC_T,    KC_D,    KC_H,    KC_N,    KC_E,    KC_I,    KC_O,    _______,
   _______, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_K,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, _______,
@@ -750,7 +750,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  */
 
 #ifdef LAYOUT_NORMAN
-[_NORMAN] = KEYMAP_CUSTOM(
+[_NORMAN] = LAYOUT(
   _______, KC_Q,    KC_W,    KC_D,    KC_F,    KC_K,    KC_J,    KC_U,    KC_R,    KC_L,    KC_QUOT, _______,
   _______, KC_A,    KC_S,    KC_E,    KC_T,    KC_G,    KC_Y,    KC_N,    KC_I,    KC_O,    KC_H,    _______,
   _______, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_P,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, _______,
@@ -772,7 +772,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  */
 
 #ifdef LAYOUT_WORKMAN
-[_WORKMAN] = KEYMAP_CUSTOM(
+[_WORKMAN] = LAYOUT(
   _______, KC_Q,    KC_D,    KC_R,    KC_W,    KC_B,    KC_J,    KC_F,    KC_U,    KC_P,    KC_QUOT, _______,
   _______, KC_A,    KC_S,    KC_H,    KC_T,    KC_G,    KC_Y,    KC_N,    KC_E,    KC_O,    KC_I,    _______,
   _______, KC_Z,    KC_X,    KC_M,    KC_C,    KC_V,    KC_K,    KC_L,    KC_COMM, KC_DOT,  KC_SLSH, _______,
@@ -792,7 +792,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |             |      |      |      |   :  |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_PUNC] = KEYMAP_CUSTOM(
+[_PUNC] = LAYOUT(
   KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, X(LTEQ), X(GTEQ), _______,
   KC_GRV,  KC_ASTR, KC_BSLS, KC_MINS,  KC_EQL, KC_SLSH, X(NOTEQ),KC_LPRN, KC_RPRN, KC_LABK, KC_RABK, _______,
   KC_AMPR, KC_CIRC, KC_PIPE, KC_UNDS, KC_PLUS, KC_QUES, X(PLMIN),KC_LBRC, KC_RBRC, KC_LCBR, KC_RCBR, _______,
@@ -811,7 +811,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |   x  |      |      |      |      |   0  |   ,  |   .  |   :  |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_NUM] = KEYMAP_CUSTOM(
+[_NUM] = LAYOUT(
   KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, S(KC_A),  KC_1,    KC_2,    KC_3,   S(KC_D), _______,
   KC_GRV,  KC_ASTR, KC_BSLS, KC_MINS,  KC_EQL, KC_SLSH, S(KC_B),  KC_4,    KC_5,    KC_6,   S(KC_E), _______,
   KC_AMPR, KC_CIRC, KC_PIPE, KC_UNDS, KC_PLUS, KC_QUES, S(KC_C),  KC_7,    KC_8,    KC_9,   S(KC_F), _______,
@@ -830,7 +830,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |             |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_FUN] = KEYMAP_CUSTOM(
+[_FUN] = LAYOUT(
   XXXXXXX,   KC_F1,   KC_F2,   KC_F3,  KC_F4,   KC_INS,  XXXXXXX, KC_PGUP,   KC_UP, KC_PGDN, KC_PGUP, KC_DEL,
   KC_CAPS,   KC_F5,   KC_F6,   KC_F7,  KC_F8,   KC_PSCR, XXXXXXX, KC_LEFT, KC_DOWN, KC_RGHT, KC_PGDN, _______,
   _______,   KC_F9,  KC_F10,  KC_F11,  KC_F12,  KC_PAUS, XXXXXXX, XXXXXXX, KC_HOME,  KC_END, XXXXXXX, _______,
@@ -849,7 +849,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_GREEKU] = KEYMAP_CUSTOM(
+[_GREEKU] = LAYOUT(
   _______, XXXXXXX, XXXXXXX,X(UEPSI), X(URHO), X(UTAU),X(UUPSI),X(UTHET),X(UIOTA),X(UOMIC),  X(UPI), _______,
   _______,X(UALPH),X(USIGM),X(UDELT), X(UPHI),X(UGAMM), X(UETA),  X(UXI),X(UKAPP),X(ULAMB), KC_QUOT, _______,
   _______,X(UZETA), X(UCHI), X(UPSI),X(UOMEG),X(UBETA),  X(UNU),  X(UMU), KC_COMM, KC_DOT,  KC_SLSH, _______,
@@ -868,7 +868,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_GREEKL] = KEYMAP_CUSTOM(
+[_GREEKL] = LAYOUT(
   _______, XXXXXXX,X(FSIGM),X(LEPSI), X(LRHO), X(LTAU),X(LUPSI),X(LTHET),X(LIOTA),X(LOMIC),  X(LPI), _______,
   _______,X(LALPH),X(LSIGM),X(LDELT), X(LPHI),X(LGAMM), X(LETA),  X(LXI),X(LKAPP),X(LLAMB), KC_QUOT, _______,
   _______,X(LZETA), X(LCHI), X(LPSI),X(LOMEG),X(LBETA),  X(LNU),  X(LMU), KC_COMM, KC_DOT,  KC_SLSH, _______,
@@ -887,7 +887,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_EMPTY] = KEYMAP_CUSTOM(
+[_EMPTY] = LAYOUT(
   XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
   XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
   XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
@@ -906,7 +906,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_EMOJI] = KEYMAP_CUSTOM(
+[_EMOJI] = LAYOUT(
   X(HART2), X(CRY2),X(WEARY),X(EYERT),X(SMIRK), X(TJOY),X(RECYC),X(UNAMU),X(MUSIC),X(OKHND),X(PENSV), X(PHEW),
   X(THMUP), X(PRAY),X(SMILE),X(SMIL2),X(FLUSH), X(GRIN),X(HEART),  X(BYE), X(KISS),X(CELEB), X(COOL),X(NOEVS),
   X(THMDN),X(SLEEP), X(CLAP),  X(CRY),  X(VIC),X(BHART),  X(SUN),X(SMEYE), X(WINK), X(MOON),X(CONFU),X(NOEVH),
@@ -925,7 +925,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_GUI] = KEYMAP_CUSTOM(
+[_GUI] = LAYOUT(
   XXXXXXX, G(KC_1), G(KC_2), G(KC_3), G(KC_4), G(KC_5), G(KC_6), G(KC_7), G(KC_8), G(KC_9), G(KC_0), XXXXXXX,
   KC_ESC,  XXXXXXX, S(KC_TAB),KC_ESC, KC_TAB,  XXXXXXX, XXXXXXX, KC_WWWB, XXXXXXX, KC_WWWF, XXXXXXX, XXXXXXX,
   XXXXXXX, XXXXXXX, KC_VOLD, KC_MUTE, KC_VOLU, KC_SPC,  KC_SPC,  KC_MPRV, KC_MPLY, KC_MNXT, XXXXXXX, XXXXXXX,
@@ -944,7 +944,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_SYS] = KEYMAP_CUSTOM(
+[_SYS] = LAYOUT(
   DEBUG,   QWERTY,  WIN,     XXXXXXX, RESET,   XXXXXXX, XXXXXXX, OUT_USB, XXXXXXX, XXXXXXX, XXXXXXX, RGBDEMO,
   XXXXXXX, FC_TOG,  XXXXXXX, DVORAK,  XXXXXXX, GLOW,    XXXXXXX, XXXXXXX, WORKMAN, LINUX,   XXXXXXX, XXXXXXX,
   XXXXXXX, XXXXXXX, XXXXXXX, COLEMAK, XXXXXXX, OUT_BT,  NORMAN,  OSX,     XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
@@ -1365,4 +1365,4 @@ void turn_off_capslock() {
         rcv = ps2_host_send(0x01);
       }
   }
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/handwired/promethium/keymaps/priyadi/config.h b/keyboards/handwired/promethium/keymaps/priyadi/config.h
index 2064f3676a7..0630fd43e38 100644
--- a/keyboards/handwired/promethium/keymaps/priyadi/config.h
+++ b/keyboards/handwired/promethium/keymaps/priyadi/config.h
@@ -1,7 +1,4 @@
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
-
-#include "../../config.h"
+#pragma once
 
 #define PRIYADI_PROMETHIUM
 
@@ -23,5 +20,3 @@
 
 #define DOUBLESPACE_LAYER_ENABLE
 // #define TOLELOT_ENABLE
-
-#endif
diff --git a/keyboards/handwired/promethium/keymaps/priyadi/keymap.c b/keyboards/handwired/promethium/keymaps/priyadi/keymap.c
index e229b67e541..a1ca79f9a94 100644
--- a/keyboards/handwired/promethium/keymaps/priyadi/keymap.c
+++ b/keyboards/handwired/promethium/keymaps/priyadi/keymap.c
@@ -686,7 +686,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * | Ctrl | Alt  | GUI  | Punc | Num  |    Space    | Fun  |Greek | GUI  |AltGr | Ctrl |
  * `-----------------------------------------------------------------------------------'
  */
-[_QWERTY] = KEYMAP_CUSTOM(
+[_QWERTY] = LAYOUT(
   KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,
   KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_QUOT, KC_ENT ,
   KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,
@@ -706,7 +706,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * `-----------------------------------------------------------------------------------'
  */
 #ifdef LAYOUT_DVORAK
-[_DVORAK] = KEYMAP_CUSTOM(
+[_DVORAK] = LAYOUT(
   _______, KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    _______,
   _______, KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    _______,
   _______, KC_SLSH, KC_Q,    KC_J,    KC_K,    KC_X,    KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    _______,
@@ -728,7 +728,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  */
 
 #ifdef LAYOUT_COLEMAK
-[_COLEMAK] = KEYMAP_CUSTOM(
+[_COLEMAK] = LAYOUT(
   _______, KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,    KC_J,    KC_L,    KC_U,    KC_Y,    KC_QUOT, _______,
   _______, KC_A,    KC_R,    KC_S,    KC_T,    KC_D,    KC_H,    KC_N,    KC_E,    KC_I,    KC_O,    _______,
   _______, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_K,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, _______,
@@ -750,7 +750,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  */
 
 #ifdef LAYOUT_NORMAN
-[_NORMAN] = KEYMAP_CUSTOM(
+[_NORMAN] = LAYOUT(
   _______, KC_Q,    KC_W,    KC_D,    KC_F,    KC_K,    KC_J,    KC_U,    KC_R,    KC_L,    KC_QUOT, _______,
   _______, KC_A,    KC_S,    KC_E,    KC_T,    KC_G,    KC_Y,    KC_N,    KC_I,    KC_O,    KC_H,    _______,
   _______, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_P,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, _______,
@@ -772,7 +772,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  */
 
 #ifdef LAYOUT_WORKMAN
-[_WORKMAN] = KEYMAP_CUSTOM(
+[_WORKMAN] = LAYOUT(
   _______, KC_Q,    KC_D,    KC_R,    KC_W,    KC_B,    KC_J,    KC_F,    KC_U,    KC_P,    KC_QUOT, _______,
   _______, KC_A,    KC_S,    KC_H,    KC_T,    KC_G,    KC_Y,    KC_N,    KC_E,    KC_O,    KC_I,    _______,
   _______, KC_Z,    KC_X,    KC_M,    KC_C,    KC_V,    KC_K,    KC_L,    KC_COMM, KC_DOT,  KC_SLSH, _______,
@@ -792,7 +792,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |             |      |      |      |   :  |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_PUNC] = KEYMAP_CUSTOM(
+[_PUNC] = LAYOUT(
   KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, X(LTEQ), X(GTEQ), _______,
   KC_GRV,  KC_ASTR, KC_BSLS, KC_MINS,  KC_EQL, KC_SLSH, X(NOTEQ),KC_LPRN, KC_RPRN, KC_LABK, KC_RABK, _______,
   KC_AMPR, KC_CIRC, KC_PIPE, KC_UNDS, KC_PLUS, KC_QUES, X(PLMIN),KC_LBRC, KC_RBRC, KC_LCBR, KC_RCBR, _______,
@@ -811,7 +811,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |   x  |      |      |      |      |   0  |   ,  |   .  |   :  |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_NUM] = KEYMAP_CUSTOM(
+[_NUM] = LAYOUT(
   KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, S(KC_A),  KC_1,    KC_2,    KC_3,   S(KC_D), _______,
   KC_GRV,  KC_ASTR, KC_BSLS, KC_MINS,  KC_EQL, KC_SLSH, S(KC_B),  KC_4,    KC_5,    KC_6,   S(KC_E), _______,
   KC_AMPR, KC_CIRC, KC_PIPE, KC_UNDS, KC_PLUS, KC_QUES, S(KC_C),  KC_7,    KC_8,    KC_9,   S(KC_F), _______,
@@ -830,7 +830,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |             |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_FUN] = KEYMAP_CUSTOM(
+[_FUN] = LAYOUT(
   XXXXXXX,   KC_F1,   KC_F2,   KC_F3,  KC_F4,   KC_INS,  XXXXXXX, KC_PGUP,   KC_UP, KC_PGDN, KC_PGUP, KC_DEL,
   KC_CAPS,   KC_F5,   KC_F6,   KC_F7,  KC_F8,   KC_PSCR, XXXXXXX, KC_LEFT, KC_DOWN, KC_RGHT, KC_PGDN, _______,
   _______,   KC_F9,  KC_F10,  KC_F11,  KC_F12,  KC_PAUS, XXXXXXX, XXXXXXX, KC_HOME,  KC_END, XXXXXXX, _______,
@@ -849,7 +849,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_GREEKU] = KEYMAP_CUSTOM(
+[_GREEKU] = LAYOUT(
   _______, XXXXXXX, XXXXXXX,X(UEPSI), X(URHO), X(UTAU),X(UUPSI),X(UTHET),X(UIOTA),X(UOMIC),  X(UPI), _______,
   _______,X(UALPH),X(USIGM),X(UDELT), X(UPHI),X(UGAMM), X(UETA),  X(UXI),X(UKAPP),X(ULAMB), KC_QUOT, _______,
   _______,X(UZETA), X(UCHI), X(UPSI),X(UOMEG),X(UBETA),  X(UNU),  X(UMU), KC_COMM, KC_DOT,  KC_SLSH, _______,
@@ -868,7 +868,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_GREEKL] = KEYMAP_CUSTOM(
+[_GREEKL] = LAYOUT(
   _______, XXXXXXX,X(FSIGM),X(LEPSI), X(LRHO), X(LTAU),X(LUPSI),X(LTHET),X(LIOTA),X(LOMIC),  X(LPI), _______,
   _______,X(LALPH),X(LSIGM),X(LDELT), X(LPHI),X(LGAMM), X(LETA),  X(LXI),X(LKAPP),X(LLAMB), KC_QUOT, _______,
   _______,X(LZETA), X(LCHI), X(LPSI),X(LOMEG),X(LBETA),  X(LNU),  X(LMU), KC_COMM, KC_DOT,  KC_SLSH, _______,
@@ -887,7 +887,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_EMPTY] = KEYMAP_CUSTOM(
+[_EMPTY] = LAYOUT(
   XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
   XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
   XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
@@ -906,7 +906,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_EMOJI] = KEYMAP_CUSTOM(
+[_EMOJI] = LAYOUT(
   X(HART2), X(CRY2),X(WEARY),X(EYERT),X(SMIRK), X(TJOY),X(RECYC),X(UNAMU),X(MUSIC),X(OKHND),X(PENSV), X(PHEW),
   X(THMUP), X(PRAY),X(SMILE),X(SMIL2),X(FLUSH), X(GRIN),X(HEART),  X(BYE), X(KISS),X(CELEB), X(COOL),X(NOEVS),
   X(THMDN),X(SLEEP), X(CLAP),  X(CRY),  X(VIC),X(BHART),  X(SUN),X(SMEYE), X(WINK), X(MOON),X(CONFU),X(NOEVH),
@@ -925,7 +925,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_GUI] = KEYMAP_CUSTOM(
+[_GUI] = LAYOUT(
   XXXXXXX, G(KC_1), G(KC_2), G(KC_3), G(KC_4), G(KC_5), G(KC_6), G(KC_7), G(KC_8), G(KC_9), G(KC_0), XXXXXXX,
   KC_ESC,  XXXXXXX, S(KC_TAB),KC_ESC, KC_TAB,  XXXXXXX, XXXXXXX, KC_WWWB, XXXXXXX, KC_WWWF, XXXXXXX, XXXXXXX,
   XXXXXXX, XXXXXXX, KC_VOLD, KC_MUTE, KC_VOLU, KC_SPC,  KC_SPC,  KC_MPRV, KC_MPLY, KC_MNXT, XXXXXXX, XXXXXXX,
@@ -944,7 +944,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |      |      |      |      |      |      |      |      |      |      |      |      |
  * `-----------------------------------------------------------------------------------'
  */
-[_SYS] = KEYMAP_CUSTOM(
+[_SYS] = LAYOUT(
   DEBUG,   QWERTY,  WIN,     XXXXXXX, RESET,   XXXXXXX, XXXXXXX, OUT_USB, XXXXXXX, XXXXXXX, XXXXXXX, RGBDEMO,
   XXXXXXX, FC_TOG,  XXXXXXX, DVORAK,  XXXXXXX, GLOW,    XXXXXXX, XXXXXXX, WORKMAN, LINUX,   XXXXXXX, XXXXXXX,
   XXXXXXX, XXXXXXX, XXXXXXX, COLEMAK, XXXXXXX, OUT_BT,  NORMAN,  OSX,     XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
@@ -1365,4 +1365,4 @@ void turn_off_capslock() {
         rcv = ps2_host_send(0x01);
       }
   }
-#endif
\ No newline at end of file
+#endif
diff --git a/keyboards/handwired/promethium/promethium.h b/keyboards/handwired/promethium/promethium.h
index 260f140c55d..b8d6352201c 100644
--- a/keyboards/handwired/promethium/promethium.h
+++ b/keyboards/handwired/promethium/promethium.h
@@ -7,4 +7,23 @@ void battery_poll(uint8_t level);
 void led_set_kb(uint8_t usb_led);
 void led_set_user(uint8_t usb_led);
 
+#define LAYOUT( \
+    k11, k12, k13, k14, k15, k16,      k17, k18, k19, k1a, k1b, k1c, \
+    k21, k22, k23, k24, k25, k26,      k27, k28, k29, k2a, k2b, k2c, \
+    k31, k32, k33, k34, k35, k36,      k37, k38, k39, k3a, k3b, k3c, \
+    k41, k42, k43, k44, k45, k46,      k47, k48, k49, k4a, k4b, k4c, \
+                             tp1, tp2, tp3 \
+) \
+{ \
+    {k11, k12, k13, k14,   k15,   k16}, \
+    {k21, k22, k23, k24,   k25,   k26}, \
+    {k31, k32, k33, k34,   k35,   k36}, \
+    {k41, k42, k43, k44,   k45,   k46}, \
+    {k17, k18, k19, k1a,   k1b,   k1c}, \
+    {k27, k28, k29, k2a,   k2b,   k2c}, \
+    {k37, k38, k39, k3a,   k3b,   k3c}, \
+    {k47, k48, k49, k4a,   k4b,   k4c}, \
+    {tp1, tp2, tp3, KC_NO, KC_NO, KC_NO}  \
+}
+
 #endif