diff --git a/keyboards/cornia/keymaps/default/keymap.c b/keyboards/cornia/keymaps/default/keymap.c
index 4a92879d7e05..efb2a17be1ee 100644
--- a/keyboards/cornia/keymaps/default/keymap.c
+++ b/keyboards/cornia/keymaps/default/keymap.c
@@ -27,8 +27,8 @@
 /* Layers definitions */
 enum layers {
   _ALPHA,
-  _NAV,
-  _NUM,
+  _LOWER,
+  _UPPER,
   _ADJUST,
 };
 
@@ -41,11 +41,11 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   //|--------+--------+--------+--------+--------+--------|                    |--------+--------+--------+--------+--------+--------|
       KC_LCTL,    KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,                         KC_N,    KC_M, KC_COMM,  KC_DOT, KC_SLSH, KC_RCTL,
   //|--------+--------+--------+--------+--------+--------+--------|  |--------+--------+--------+--------+--------+--------+--------|
-                                          KC_LSFT,MO(_NAV),  KC_SPC,     KC_ENT,MO(_NUM), KC_RSFT
+                                          KC_LSFT, TL_LOWR,  KC_SPC,     KC_ENT, TL_UPPR, KC_RSFT
                                       //`--------------------------'  `--------------------------'
   ),
 
-    [_NAV] = LAYOUT_split_3x6_3(
+    [_LOWER] = LAYOUT_split_3x6_3(
   //|--------+--------+--------+--------+--------+--------|                    |--------+--------+--------+--------+--------+--------|
       _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,                      XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,  KC_DEL,
   //|--------+--------+--------+--------+--------+--------|                    |--------+--------+--------+--------+--------+--------|
@@ -53,11 +53,11 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   //|--------+--------+--------+--------+--------+--------|                    |--------+--------+--------+--------+--------+--------|
       KC_LALT, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,                      XXXXXXX, KC_HOME, KC_PGDN, KC_PGUP,  KC_END, KC_RALT,
   //|--------+--------+--------+--------+--------+--------+--------|  |--------+--------+--------+--------+--------+--------+--------|
-                                          KC_LGUI, _______, _______,  _______,MO(_ADJUST),_______
+                                          KC_LGUI, _______, _______,    _______, _______, _______
                                       //`--------------------------'  `--------------------------'
   ),
 
-    [_NUM] = LAYOUT_split_3x6_3(
+    [_UPPER] = LAYOUT_split_3x6_3(
   //|--------+--------+--------+--------+--------+--------|                    |--------+--------+--------+--------+--------+--------|
       _______,    KC_1,    KC_2,    KC_3,    KC_4,    KC_5,                         KC_6,    KC_7,    KC_8,    KC_9,    KC_0,  KC_DEL,
   //|--------+--------+--------+--------+--------+--------|                    |--------+--------+--------+--------+--------+--------|
@@ -65,7 +65,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   //|--------+--------+--------+--------+--------+--------|                    |--------+--------+--------+--------+--------+--------|
       _______, XXXXXXX,  KC_GRV, CK_QMRK,  KC_EQL, XXXXXXX,                      XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______,
   //|--------+--------+--------+--------+--------+--------+--------|  |--------+--------+--------+--------+--------+--------+--------|
-                                        _______,MO(_ADJUST),_______,    _______, _______, KC_RGUI
+                                          _______, _______, _______,    _______, _______, KC_RGUI
                                       //`--------------------------'  `--------------------------'
   ),
 
diff --git a/keyboards/cornia/keymaps/default/rules.mk b/keyboards/cornia/keymaps/default/rules.mk
new file mode 100644
index 000000000000..0a1e28e87077
--- /dev/null
+++ b/keyboards/cornia/keymaps/default/rules.mk
@@ -0,0 +1,16 @@
+# Copyright 2024 Vaarai
+#
+# 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/>.
+
+TRI_LAYER_ENABLE = yes