diff --git a/keyboards/40percentclub/nori/keymaps/default/keymap.c b/keyboards/40percentclub/nori/keymaps/default/keymap.c
index 25d5c89af3f..f7760a268f9 100644
--- a/keyboards/40percentclub/nori/keymaps/default/keymap.c
+++ b/keyboards/40percentclub/nori/keymaps/default/keymap.c
@@ -4,12 +4,14 @@
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _COLEMAK 1
-#define _DVORAK 2
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _COLEMAK,
+    _DVORAK,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/ergotravel/keymaps/default/keymap.c b/keyboards/ergotravel/keymaps/default/keymap.c
index 7c96296a16b..2a439688148 100644
--- a/keyboards/ergotravel/keymaps/default/keymap.c
+++ b/keyboards/ergotravel/keymaps/default/keymap.c
@@ -1,10 +1,12 @@
 #include QMK_KEYBOARD_H
 
 
-#define _QWERTY 0
-#define _LOWER 1
-#define _RAISE 2
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _LOWER,
+    _RAISE,
+    _ADJUST,
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
@@ -39,12 +41,12 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   ),
 
   [_RAISE] = LAYOUT(
- 
+
   KC_ESC,  KC_1,    KC_2,  KC_3,   KC_4,    KC_5,     _______,          _______,     KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_DEL,
   _______, KC_4,    KC_5,  KC_6,   KC_PLUS, _______,  _______,          _______,   _______,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, _______,
   KC_ENT,  KC_7,    KC_8,  KC_9,   KC_MINS, _______,  _______,          _______,   _______,   KC_NUHS, KC_NUBS, KC_MUTE, _______, KC_BSLS,
   _______, KC_COMM, KC_0,  KC_DOT, _______, KC_BSPC,                                 KC_BSPC, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY
-  
+
   ),
 
   [_ADJUST] = LAYOUT(
diff --git a/keyboards/handwired/atreus50/keymaps/default/keymap.c b/keyboards/handwired/atreus50/keymaps/default/keymap.c
index 68724c05067..52a450c3a0e 100644
--- a/keyboards/handwired/atreus50/keymaps/default/keymap.c
+++ b/keyboards/handwired/atreus50/keymaps/default/keymap.c
@@ -4,13 +4,15 @@
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _COLEMAK 1
-#define _DVORAK 2
-#define _LOWER 3
-#define _RAISE 4
-#define _MOVEMENT 5
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _COLEMAK,
+    _DVORAK,
+    _LOWER,
+    _RAISE,
+    _MOVEMENT,
+    _ADJUST,
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/handwired/ortho5x13/keymaps/default/keymap.c b/keyboards/handwired/ortho5x13/keymaps/default/keymap.c
index 39ae1872a20..aeecfa1d8e3 100644
--- a/keyboards/handwired/ortho5x13/keymaps/default/keymap.c
+++ b/keyboards/handwired/ortho5x13/keymaps/default/keymap.c
@@ -4,12 +4,14 @@
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _COLEMAK 1
-#define _DVORAK 2
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _COLEMAK,
+    _DVORAK,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/keebio/levinson/keymaps/default/keymap.c b/keyboards/keebio/levinson/keymaps/default/keymap.c
index ed4c7243d10..72da4addc31 100644
--- a/keyboards/keebio/levinson/keymaps/default/keymap.c
+++ b/keyboards/keebio/levinson/keymaps/default/keymap.c
@@ -5,12 +5,14 @@
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _COLEMAK 1
-#define _DVORAK 2
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _COLEMAK,
+    _DVORAK,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/keebio/nyquist/keymaps/default/keymap.c b/keyboards/keebio/nyquist/keymaps/default/keymap.c
index 03de74a80dc..a06cde95553 100644
--- a/keyboards/keebio/nyquist/keymaps/default/keymap.c
+++ b/keyboards/keebio/nyquist/keymaps/default/keymap.c
@@ -5,12 +5,14 @@
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _COLEMAK 1
-#define _DVORAK 2
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _COLEMAK,
+    _DVORAK,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/keebio/rorschach/keymaps/default/keymap.c b/keyboards/keebio/rorschach/keymaps/default/keymap.c
index 00f2a9cffbb..c1efce8f2b8 100644
--- a/keyboards/keebio/rorschach/keymaps/default/keymap.c
+++ b/keyboards/keebio/rorschach/keymaps/default/keymap.c
@@ -1,10 +1,12 @@
 #include QMK_KEYBOARD_H
 
 
-#define _QWERTY 0
-#define _LOWER 1
-#define _RAISE 2
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 #define LOWER MO(_LOWER)
 #define RAISE MO(_RAISE)
diff --git a/keyboards/keebio/viterbi/keymaps/default/keymap.c b/keyboards/keebio/viterbi/keymaps/default/keymap.c
index 1db80b74524..d23ebe6797b 100644
--- a/keyboards/keebio/viterbi/keymaps/default/keymap.c
+++ b/keyboards/keebio/viterbi/keymaps/default/keymap.c
@@ -5,10 +5,12 @@
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _LOWER 1
-#define _RAISE 2
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/keebio/wavelet/keymaps/default/keymap.c b/keyboards/keebio/wavelet/keymaps/default/keymap.c
index ed4c7243d10..72da4addc31 100644
--- a/keyboards/keebio/wavelet/keymaps/default/keymap.c
+++ b/keyboards/keebio/wavelet/keymaps/default/keymap.c
@@ -5,12 +5,14 @@
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _COLEMAK 1
-#define _DVORAK 2
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _COLEMAK,
+    _DVORAK,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/lets_split/keymaps/default/keymap.c b/keyboards/lets_split/keymaps/default/keymap.c
index bc240b5f003..34b470d533e 100644
--- a/keyboards/lets_split/keymaps/default/keymap.c
+++ b/keyboards/lets_split/keymaps/default/keymap.c
@@ -4,12 +4,14 @@
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _COLEMAK 1
-#define _DVORAK 2
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _COLEMAK,
+    _DVORAK,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/maple_computing/launchpad/keymaps/default/keymap.c b/keyboards/maple_computing/launchpad/keymaps/default/keymap.c
index 62dee131f88..efd67e8c1b4 100644
--- a/keyboards/maple_computing/launchpad/keymaps/default/keymap.c
+++ b/keyboards/maple_computing/launchpad/keymaps/default/keymap.c
@@ -6,9 +6,10 @@
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-
-#define _FUNC 15
+enum layer_names {
+    _QWERTY,
+    _FUNC
+};
 
 // Defines for task manager and such
 #define CALTDEL LCTL(LALT(KC_DEL))
diff --git a/keyboards/maple_computing/launchpad/keymaps/default_rgb/keymap.c b/keyboards/maple_computing/launchpad/keymaps/default_rgb/keymap.c
index 529fa91f651..69fb3ce5613 100644
--- a/keyboards/maple_computing/launchpad/keymaps/default_rgb/keymap.c
+++ b/keyboards/maple_computing/launchpad/keymaps/default_rgb/keymap.c
@@ -7,9 +7,11 @@ extern keymap_config_t keymap_config;
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _RGB 1
-#define _FUNC 15
+enum layer_names {
+    _QWERTY,
+    _RGB,
+    _FUNC
+};
 
 // Defines for task manager and such
 #define CALTDEL LCTL(LALT(KC_DEL))
diff --git a/keyboards/maple_computing/minidox/keymaps/default/keymap.c b/keyboards/maple_computing/minidox/keymaps/default/keymap.c
index 7886eec1723..d71e5b6e559 100644
--- a/keyboards/maple_computing/minidox/keymaps/default/keymap.c
+++ b/keyboards/maple_computing/minidox/keymaps/default/keymap.c
@@ -5,10 +5,12 @@
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _LOWER 1
-#define _RAISE 2
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/miniaxe/keymaps/default/keymap.c b/keyboards/miniaxe/keymaps/default/keymap.c
index 45e1e131e89..81f8004e694 100644
--- a/keyboards/miniaxe/keymaps/default/keymap.c
+++ b/keyboards/miniaxe/keymaps/default/keymap.c
@@ -16,10 +16,12 @@
 #include QMK_KEYBOARD_H
 
 // Defines the keycodes used by our macros in process_record_user
-#define _QWERTY 0
-#define _LOWER 1
-#define _RAISE 2
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/miniaxe/keymaps/underglow/keymap.c b/keyboards/miniaxe/keymaps/underglow/keymap.c
index 2cadbb824fd..31a7ccddf93 100644
--- a/keyboards/miniaxe/keymaps/underglow/keymap.c
+++ b/keyboards/miniaxe/keymaps/underglow/keymap.c
@@ -16,10 +16,12 @@
 #include QMK_KEYBOARD_H
 
 // Defines the keycodes used by our macros in process_record_user
-#define _QWERTY 0
-#define _LOWER 1
-#define _RAISE 2
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/omkbd/ergodash/mini/keymaps/default/keymap.c b/keyboards/omkbd/ergodash/mini/keymaps/default/keymap.c
index 1d183836524..d1016ecc5dd 100644
--- a/keyboards/omkbd/ergodash/mini/keymaps/default/keymap.c
+++ b/keyboards/omkbd/ergodash/mini/keymaps/default/keymap.c
@@ -1,10 +1,12 @@
 #include QMK_KEYBOARD_H
 
 
-#define _QWERTY 0
-#define _LOWER 1
-#define _RAISE 2
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/omkbd/ergodash/rev1/keymaps/default/keymap.c b/keyboards/omkbd/ergodash/rev1/keymaps/default/keymap.c
index c5e0a301473..02517004338 100644
--- a/keyboards/omkbd/ergodash/rev1/keymaps/default/keymap.c
+++ b/keyboards/omkbd/ergodash/rev1/keymaps/default/keymap.c
@@ -1,10 +1,12 @@
 #include QMK_KEYBOARD_H
 
 
-#define _QWERTY 0
-#define _LOWER 1
-#define _RAISE 2
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/orthodox/keymaps/default/keymap.c b/keyboards/orthodox/keymaps/default/keymap.c
index 1e06d7106d1..3ad20a288a5 100644
--- a/keyboards/orthodox/keymaps/default/keymap.c
+++ b/keyboards/orthodox/keymaps/default/keymap.c
@@ -25,12 +25,14 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _COLEMAK 1
-#define _DVORAK 2
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _COLEMAK,
+    _DVORAK,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/unikeyboard/divergetm2/keymaps/default/keymap.c b/keyboards/unikeyboard/divergetm2/keymaps/default/keymap.c
index e4ba788b700..d4f38e4a199 100644
--- a/keyboards/unikeyboard/divergetm2/keymaps/default/keymap.c
+++ b/keyboards/unikeyboard/divergetm2/keymaps/default/keymap.c
@@ -22,12 +22,14 @@
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
 // entirely and just use numbers.
-#define _QWERTY 0
-#define _COLEMAK 1
-#define _DVORAK 2
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _COLEMAK,
+    _DVORAK,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/keyboards/woodkeys/scarletbandana/keymaps/default/keymap.c b/keyboards/woodkeys/scarletbandana/keymaps/default/keymap.c
index 707e9fa132d..b9cf12cd7ea 100644
--- a/keyboards/woodkeys/scarletbandana/keymaps/default/keymap.c
+++ b/keyboards/woodkeys/scarletbandana/keymaps/default/keymap.c
@@ -20,12 +20,14 @@
 extern rgblight_config_t rgblight_config;
 #endif
 
-#define _QWERTY 0
-#define _COLEMAK 1
-#define _DVORAK 2
-#define _LOWER 3
-#define _RAISE 4
-#define _ADJUST 16
+enum layer_names {
+    _QWERTY,
+    _COLEMAK,
+    _DVORAK,
+    _LOWER,
+    _RAISE,
+    _ADJUST
+};
 
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
diff --git a/quantum/keymap_introspection.c b/quantum/keymap_introspection.c
index 7a96f802ef2..179b5eb0376 100644
--- a/quantum/keymap_introspection.c
+++ b/quantum/keymap_introspection.c
@@ -17,6 +17,8 @@ uint8_t keymap_layer_count(void) {
     return NUM_KEYMAP_LAYERS;
 }
 
+_Static_assert(NUM_KEYMAP_LAYERS <= MAX_LAYER, "Number of keymap layers exceeds maximum set by LAYER_STATE_(8|16|32)BIT");
+
 #if defined(ENCODER_ENABLE) && defined(ENCODER_MAP_ENABLE)
 
 #    define NUM_ENCODERMAP_LAYERS ((uint8_t)(sizeof(encoder_map) / ((NUM_ENCODERS) * (2) * sizeof(uint16_t))))