diff --git a/keyboards/doro67/multi/keymaps/konstantin/config.h b/keyboards/doro67/multi/keymaps/konstantin/config.h
index 1d12c7db376..3c2583e2d46 100644
--- a/keyboards/doro67/multi/keymaps/konstantin/config.h
+++ b/keyboards/doro67/multi/keymaps/konstantin/config.h
@@ -1,6 +1,4 @@
 #pragma once
 
-#define DYNAMIC_KEYMAP_LAYER_COUNT 3
-
 #define LAYER_FN
 #define LAYER_NUMPAD
diff --git a/keyboards/doro67/multi/keymaps/konstantin/rules.mk b/keyboards/doro67/multi/keymaps/konstantin/rules.mk
index 9abe619154d..10ff0bc915c 100644
--- a/keyboards/doro67/multi/keymaps/konstantin/rules.mk
+++ b/keyboards/doro67/multi/keymaps/konstantin/rules.mk
@@ -1,5 +1,5 @@
 # Generic features
-BOOTMAGIC_ENABLE = lite     # Enable Bootmagic Lite
+BOOTMAGIC_ENABLE   = yes
 COMMAND_ENABLE     = yes
 CONSOLE_ENABLE     = yes
 EXTRAKEY_ENABLE    = yes
diff --git a/keyboards/dz60/keymaps/konstantin_b/rules.mk b/keyboards/dz60/keymaps/konstantin_b/rules.mk
index 6006b7263cb..c1eb43da2cd 100644
--- a/keyboards/dz60/keymaps/konstantin_b/rules.mk
+++ b/keyboards/dz60/keymaps/konstantin_b/rules.mk
@@ -1,13 +1,21 @@
-BACKLIGHT_ENABLE   = no
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
+USER_NAME := konstantin
+
+# Generic features
+BOOTMAGIC_ENABLE   = yes
 COMMAND_ENABLE     = yes
 CONSOLE_ENABLE     = yes
 EXTRAKEY_ENABLE    = yes
 MOUSEKEY_ENABLE    = yes
 NKRO_ENABLE        = yes
-RGBLIGHT_ENABLE    = no
-SPACE_CADET_ENABLE = no
 TAP_DANCE_ENABLE   = yes
 UNICODEMAP_ENABLE  = no
 
-USER_NAME = konstantin
+# Keyboard-specific features
+BACKLIGHT_ENABLE   = no
+RGBLIGHT_ENABLE    = no
+VIA_ENABLE         = yes
+
+# Firmware size reduction
+GRAVE_ESC_ENABLE   = no
+MAGIC_ENABLE       = no
+SPACE_CADET_ENABLE = no
diff --git a/keyboards/evyd13/wasdat/keymaps/konstantin/config.h b/keyboards/evyd13/wasdat/keymaps/konstantin/config.h
index 1d12c7db376..3c2583e2d46 100644
--- a/keyboards/evyd13/wasdat/keymaps/konstantin/config.h
+++ b/keyboards/evyd13/wasdat/keymaps/konstantin/config.h
@@ -1,6 +1,4 @@
 #pragma once
 
-#define DYNAMIC_KEYMAP_LAYER_COUNT 3
-
 #define LAYER_FN
 #define LAYER_NUMPAD
diff --git a/keyboards/evyd13/wasdat/keymaps/konstantin/rules.mk b/keyboards/evyd13/wasdat/keymaps/konstantin/rules.mk
index 2ae41e94231..f73ad286a1f 100644
--- a/keyboards/evyd13/wasdat/keymaps/konstantin/rules.mk
+++ b/keyboards/evyd13/wasdat/keymaps/konstantin/rules.mk
@@ -1,5 +1,5 @@
 # Generic features
-BOOTMAGIC_ENABLE = lite     # Enable Bootmagic Lite
+BOOTMAGIC_ENABLE   = yes
 COMMAND_ENABLE     = yes
 CONSOLE_ENABLE     = yes
 EXTRAKEY_ENABLE    = yes
diff --git a/keyboards/kbdfans/kbd6x/keymaps/konstantin/config.h b/keyboards/kbdfans/kbd6x/keymaps/konstantin/config.h
index 37f4e42c71d..4b511eb8484 100644
--- a/keyboards/kbdfans/kbd6x/keymaps/konstantin/config.h
+++ b/keyboards/kbdfans/kbd6x/keymaps/konstantin/config.h
@@ -1,5 +1,3 @@
 #pragma once
 
-#define DYNAMIC_KEYMAP_LAYER_COUNT 3
-
 #define LAYER_FN
diff --git a/keyboards/kbdfans/kbd6x/keymaps/konstantin/keymap.c b/keyboards/kbdfans/kbd6x/keymaps/konstantin/keymap.c
index 304234a3f40..43bd06da9b9 100644
--- a/keyboards/kbdfans/kbd6x/keymaps/konstantin/keymap.c
+++ b/keyboards/kbdfans/kbd6x/keymaps/konstantin/keymap.c
@@ -1,70 +1,38 @@
 #include QMK_KEYBOARD_H
 #include "konstantin.h"
 
-enum keycodes_keymap {
-    RCTRL = RANGE_KEYMAP,
-};
-
 enum layers_keymap {
     L_RCTRL = LAYERS_KEYMAP,
 };
 
-void eeconfig_init_keymap(void) {
-    rgblight_sethsv(MODERN_DOLCH_RED);
-    rgblight_mode(RGBLIGHT_MODE_RAINBOW_SWIRL);
-}
-
-bool indicator_light = false;
-
-bool process_record_keymap(uint16_t keycode, keyrecord_t *record) {
-    switch (keycode) {
-    case RGB_TOG ... RGB_SPD:
-        // Disable RGB controls when Fn/Caps indicator lights are on
-        if (indicator_light) {
-            return false;
-        }
-        // Shift+Toggle = reset RGB
-        if (record->event.pressed && keycode == RGB_TOG && get_mods() & MOD_MASK_SHIFT) {
-            eeconfig_init_keymap();
-            return false;
-        }
-        break;
-
-    // Combined RCtrl and layer
-    case RCTRL:
-        if (record->event.pressed) {
-            register_code(KC_RCTRL);
-            layer_on(L_RCTRL);
-        } else {
-            unregister_code(KC_RCTRL);
-            layer_off(L_RCTRL);
-        }
-        break;
-    }
+enum keycodes_keymap {
+    RCTRL = RANGE_KEYMAP,
+};
 
-    return true;
+static inline void reset_light(void) {
+    rgblight_mode(RGBLIGHT_MODE_RAINBOW_SWIRL);
+    rgblight_sethsv(MODERN_DOLCH_RED);
 }
 
 static inline void fn_light(void) {
     rgblight_mode_noeeprom(RGBLIGHT_MODE_STATIC_LIGHT);
     rgblight_sethsv_noeeprom(modern_dolch_red.h, modern_dolch_red.s, rgblight_get_val());
-    indicator_light = true;
 }
 
 static inline void caps_light(void) {
     rgblight_mode_noeeprom(RGBLIGHT_MODE_STATIC_LIGHT);
     rgblight_sethsv_noeeprom(modern_dolch_cyan.h, modern_dolch_cyan.s, rgblight_get_val());
-    indicator_light = true;
 }
 
 static inline void restore_light(void) {
     rgblight_config_t saved = { .raw = eeconfig_read_rgblight() };
-    rgblight_sethsv_noeeprom(saved.hue, saved.sat, saved.val);
     rgblight_mode_noeeprom(saved.mode);
-    indicator_light = false;
+    rgblight_sethsv_noeeprom(saved.hue, saved.sat, saved.val);
 }
 
-static void check_light_layer(uint32_t state) {
+static bool last_checked_layer;
+
+static void check_light_layer(layer_state_t state) {
     if (IS_LAYER_ON_STATE(state, L_FN)) {
         fn_light();
     } else if (IS_HOST_LED_ON(USB_LED_CAPS_LOCK)) {
@@ -72,22 +40,34 @@ static void check_light_layer(uint32_t state) {
     } else {
         restore_light();
     }
+    last_checked_layer = true;
 }
 
-static void check_light_led(uint8_t usb_led) {
-    if (IS_LED_ON(usb_led, USB_LED_CAPS_LOCK)) {
+static void check_light_led(uint8_t leds) {
+    if (IS_LED_ON(leds, USB_LED_CAPS_LOCK)) {
         caps_light();
     } else if (IS_LAYER_ON(L_FN)) {
         fn_light();
     } else {
         restore_light();
     }
+    last_checked_layer = false;
+}
+
+static void inline check_light(void) {
+    last_checked_layer
+        ? check_light_layer(layer_state)
+        : check_light_led(host_keyboard_leds());
+}
+
+void eeconfig_init_keymap(void) {
+    reset_light();
 }
 
 static bool skip_led = false;
 
-uint32_t layer_state_set_keymap(uint32_t state) {
-    static uint32_t prev_state = L_BASE;
+layer_state_t layer_state_set_keymap(layer_state_t state) {
+    static layer_state_t prev_state = L_BASE;
     if (IS_LAYER_ON_STATE(state, L_FN) != IS_LAYER_ON_STATE(prev_state, L_FN)) {
         check_light_layer(state);  // Fn state changed since last time
         skip_led = IS_LAYER_ON_STATE(state, L_FN);
@@ -104,6 +84,37 @@ void led_set_keymap(uint8_t usb_led) {
     check_light_led(usb_led);
 }
 
+bool process_record_keymap(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+    case RGB_TOG ... RGB_SPD:
+        if (record->event.pressed) {
+            // Shift+Toggle = reset RGB
+            if (keycode == RGB_TOG && get_mods() & MOD_MASK_SHIFT) {
+                reset_light();
+                return false;
+            }
+            restore_light();
+        } else {
+            check_light();
+        }
+        break;
+
+    // Combined RCtrl and layer
+    // Cannot use LM(L_RCTRL, MOD_RCTL) because it sends LCtrl instead of RCtrl
+    case RCTRL:
+        if (record->event.pressed) {
+            register_code(KC_RCTRL);
+            layer_on(L_RCTRL);
+        } else {
+            unregister_code(KC_RCTRL);
+            layer_off(L_RCTRL);
+        }
+        break;
+    }
+
+    return true;
+}
+
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /* Base layer
      * ┌───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┬───┐
@@ -157,7 +168,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
      * ├──────┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴─┬─┴────┬───┤
      * │        │RTg│RV-│RV+│RMd│   │   │   │   │   │   │      │   │
      * └─────┬──┴┬──┴──┬┴───┴───┴───┴───┴───┴───┴──┬┴───┴┬───┬─┴───┘
-     *       │DPR│DstNA│                           │     │   │
+     *       │DPR│DstNA│                           │RGui │   │
      *       └───┴─────┴───────────────────────────┴─────┴───┘
      */
     [L_RCTRL] = LAYOUT(
@@ -165,6 +176,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         _______, TOP,     MV_UP,   BOTTOM,  TAB_PRV, _______, _______, _______, _______, _______, _______, _______, _______, DEL_NXT,
         _______, MV_LEFT, MV_DOWN, MV_RGHT, TAB_NXT, _______, _______, _______, _______, _______, _______, _______, _______,
         _______, RGB_TOG, RGB_VAD, RGB_VAI, RGB_MOD, _______, _______, _______, _______, _______, _______, _______, _______,
-        XXXXXXX, DST_P_R, DST_N_A,                            _______,                            _______, _______, XXXXXXX
+        XXXXXXX, DST_P_R, DST_N_A,                            _______,                            KC_RGUI, _______, XXXXXXX
     ),
 };
diff --git a/keyboards/kbdfans/kbd6x/keymaps/konstantin/rules.mk b/keyboards/kbdfans/kbd6x/keymaps/konstantin/rules.mk
index 0f7f72f3428..cff02d7c5b4 100644
--- a/keyboards/kbdfans/kbd6x/keymaps/konstantin/rules.mk
+++ b/keyboards/kbdfans/kbd6x/keymaps/konstantin/rules.mk
@@ -1,7 +1,7 @@
 # Generic features
-BOOTMAGIC_ENABLE = lite     # Enable Bootmagic Lite
+BOOTMAGIC_ENABLE   = yes
 COMMAND_ENABLE     = yes
-CONSOLE_ENABLE     = no
+CONSOLE_ENABLE     = yes
 EXTRAKEY_ENABLE    = yes
 MOUSEKEY_ENABLE    = yes
 NKRO_ENABLE        = yes
diff --git a/keyboards/melody96/keymaps/konstantin/rules.mk b/keyboards/melody96/keymaps/konstantin/rules.mk
index e02c6c7b194..816ece7b268 100644
--- a/keyboards/melody96/keymaps/konstantin/rules.mk
+++ b/keyboards/melody96/keymaps/konstantin/rules.mk
@@ -1,5 +1,5 @@
 # Generic features
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
+BOOTMAGIC_ENABLE   = yes
 COMMAND_ENABLE     = yes
 CONSOLE_ENABLE     = yes
 EXTRAKEY_ENABLE    = yes
@@ -11,6 +11,7 @@ UNICODEMAP_ENABLE  = yes
 # Keyboard-specific features
 BACKLIGHT_ENABLE   = no
 RGBLIGHT_ENABLE    = yes
+VIA_ENABLE         = yes
 
 # Firmware size reduction
 GRAVE_ESC_ENABLE   = no
diff --git a/keyboards/whitefox/keymaps/konstantin/rules.mk b/keyboards/whitefox/keymaps/konstantin/rules.mk
index bb327cf2674..afdeb979e8f 100644
--- a/keyboards/whitefox/keymaps/konstantin/rules.mk
+++ b/keyboards/whitefox/keymaps/konstantin/rules.mk
@@ -1,5 +1,5 @@
 # Generic features
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
+BOOTMAGIC_ENABLE   = yes
 COMMAND_ENABLE     = yes
 CONSOLE_ENABLE     = yes
 EXTRAKEY_ENABLE    = yes
diff --git a/users/konstantin/config.h b/users/konstantin/config.h
index 2629cdd5703..d429452363e 100644
--- a/users/konstantin/config.h
+++ b/users/konstantin/config.h
@@ -1,3 +1,19 @@
+/* Copyright 2019-2021 Konstantin Đorđević <vomindoraan@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #pragma once
 
 // Keyboard reports
@@ -24,7 +40,7 @@
 // Tapping
 #define PERMISSIVE_HOLD
 #define TAPPING_TERM    200
-#define TAPPING_TOGGLE  3
+#define TAPPING_TOGGLE  2
 
 // Unicode
 #define UNICODE_CYCLE_PERSIST  false
diff --git a/users/konstantin/konstantin.c b/users/konstantin/konstantin.c
index 3fdf5a4ca92..5d80877f0e4 100644
--- a/users/konstantin/konstantin.c
+++ b/users/konstantin/konstantin.c
@@ -1,3 +1,19 @@
+/* Copyright 2019-2021 Konstantin Đorđević <vomindoraan@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "konstantin.h"
 
 __attribute__((weak))
@@ -21,6 +37,41 @@ void keyboard_post_init_user(void) {
     keyboard_post_init_keymap();
 }
 
+__attribute__((weak))
+layer_state_t layer_state_set_keymap(layer_state_t state) {
+    return state;
+}
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+    state = layer_state_set_keymap(state);
+
+#ifdef LAYER_NUMPAD
+    bool numpad = IS_LAYER_ON_STATE(state, L_NUMPAD);
+    bool num_lock = IS_HOST_LED_ON(USB_LED_NUM_LOCK);
+    if (numpad != num_lock) {
+        tap_code(KC_NLCK);  // Toggle Num Lock to match Numpad layer state
+    }
+#endif
+
+    return state;
+}
+
+__attribute__((weak))
+void led_set_keymap(uint8_t usb_led) {}
+
+void led_set_user(uint8_t usb_led) {
+    led_set_keymap(usb_led);
+}
+
+__attribute__((weak))
+bool led_update_keymap(led_t led_state) {
+    return true;
+}
+
+bool led_update_user(led_t led_state) {
+    return led_update_keymap(led_state);
+}
+
 __attribute__((weak))
 bool process_record_keymap(uint16_t keycode, keyrecord_t *record) {
     return true;
@@ -91,38 +142,3 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
 
     return true;
 }
-
-__attribute__((weak))
-uint32_t layer_state_set_keymap(uint32_t state) {
-    return state;
-}
-
-layer_state_t layer_state_set_user(layer_state_t state) {
-    state = layer_state_set_keymap(state);
-
-#ifdef LAYER_NUMPAD
-    bool numpad = IS_LAYER_ON_STATE(state, L_NUMPAD);
-    bool num_lock = IS_HOST_LED_ON(USB_LED_NUM_LOCK);
-    if (numpad != num_lock) {
-        tap_code(KC_NLCK);  // Toggle Num Lock to match Numpad layer state
-    }
-#endif
-
-    return state;
-}
-
-__attribute__((weak))
-void led_set_keymap(uint8_t usb_led) {}
-
-void led_set_user(uint8_t usb_led) {
-    led_set_keymap(usb_led);
-}
-
-__attribute__((weak))
-bool led_update_keymap(led_t led_state) {
-    return true;
-}
-
-bool led_update_user(led_t led_state) {
-    return led_update_keymap(led_state);
-}
diff --git a/users/konstantin/konstantin.h b/users/konstantin/konstantin.h
index 249b3fe15bf..7da1dbfd218 100644
--- a/users/konstantin/konstantin.h
+++ b/users/konstantin/konstantin.h
@@ -1,3 +1,19 @@
+/* Copyright 2019-2021 Konstantin Đorđević <vomindoraan@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #pragma once
 
 #include "quantum.h"
@@ -56,14 +72,6 @@
         set_mods(mods);            \
     }
 
-enum keycodes_user {
-    CLEAR = SAFE_RANGE,
-    DST_P_R,
-    DST_N_A,
-
-    RANGE_KEYMAP,
-};
-
 enum layers_user {
     L_BASE,
 #ifdef LAYER_FN
@@ -76,11 +84,21 @@ enum layers_user {
     LAYERS_KEYMAP,
 };
 
+enum keycodes_user {
+    CLEAR = SAFE_RANGE,
+    DST_P_R,
+    DST_N_A,
+
+    RANGE_KEYMAP,
+};
+
 void keyboard_pre_init_keymap(void);
 void eeconfig_init_keymap(void);
 void keyboard_post_init_keymap(void);
 
-bool     process_record_keymap(uint16_t keycode, keyrecord_t *record);
-uint32_t layer_state_set_keymap(uint32_t state);
-void     led_set_keymap(uint8_t usb_led);
-bool     led_update_keymap(led_t led_state);
+layer_state_t layer_state_set_keymap(layer_state_t state);
+
+void led_set_keymap(uint8_t usb_led);
+bool led_update_keymap(led_t led_state);
+
+bool process_record_keymap(uint16_t keycode, keyrecord_t *record);
diff --git a/users/konstantin/post_config.h b/users/konstantin/post_config.h
new file mode 100644
index 00000000000..3199b2124fa
--- /dev/null
+++ b/users/konstantin/post_config.h
@@ -0,0 +1,22 @@
+/* Copyright 2021 Konstantin Đorđević <vomindoraan@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+// VIA
+#ifndef DYNAMIC_KEYMAP_LAYER_COUNT
+    #define DYNAMIC_KEYMAP_LAYER_COUNT 3
+#endif
diff --git a/users/konstantin/rgb.c b/users/konstantin/rgb.c
index fffa250f25f..2eeef829b08 100644
--- a/users/konstantin/rgb.c
+++ b/users/konstantin/rgb.c
@@ -1,3 +1,19 @@
+/* Copyright 2019-2021 Konstantin Đorđević <vomindoraan@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "rgb.h"
 
 #ifdef RGBLIGHT_EFFECT_BREATHING
diff --git a/users/konstantin/rgb.h b/users/konstantin/rgb.h
index e09c5bd7742..3425dcb0690 100644
--- a/users/konstantin/rgb.h
+++ b/users/konstantin/rgb.h
@@ -1,3 +1,19 @@
+/* Copyright 2019-2021 Konstantin Đorđević <vomindoraan@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #pragma once
 
 #include "quantum.h"
diff --git a/users/konstantin/tap_dance.c b/users/konstantin/tap_dance.c
index 4ec8caa63f7..57a29d98b8e 100644
--- a/users/konstantin/tap_dance.c
+++ b/users/konstantin/tap_dance.c
@@ -1,3 +1,19 @@
+/* Copyright 2019-2021 Konstantin Đorđević <vomindoraan@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "tap_dance.h"
 #include "konstantin.h"
 
diff --git a/users/konstantin/tap_dance.h b/users/konstantin/tap_dance.h
index 56889a19ef2..047662a8e95 100644
--- a/users/konstantin/tap_dance.h
+++ b/users/konstantin/tap_dance.h
@@ -1,3 +1,19 @@
+/* Copyright 2019-2021 Konstantin Đorđević <vomindoraan@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #pragma once
 
 #include "quantum.h"
diff --git a/users/konstantin/unicode.c b/users/konstantin/unicode.c
index 8ef5aaa1ec3..4eae716afde 100644
--- a/users/konstantin/unicode.c
+++ b/users/konstantin/unicode.c
@@ -1,3 +1,19 @@
+/* Copyright 2019-2021 Konstantin Đorđević <vomindoraan@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "unicode.h"
 
 #ifdef UNICODEMAP_ENABLE
diff --git a/users/konstantin/unicode.h b/users/konstantin/unicode.h
index b2616d120b4..1a1eb608949 100644
--- a/users/konstantin/unicode.h
+++ b/users/konstantin/unicode.h
@@ -1,3 +1,19 @@
+/* Copyright 2019-2021 Konstantin Đorđević <vomindoraan@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #pragma once
 
 #include "quantum.h"