diff --git a/keyboards/dztech/mellow/keymaps/default/keymap.c b/keyboards/dztech/mellow/keymaps/default/keymap.c
index a30832fb0c1..0dd4583432d 100644
--- a/keyboards/dztech/mellow/keymaps/default/keymap.c
+++ b/keyboards/dztech/mellow/keymaps/default/keymap.c
@@ -1,4 +1,19 @@
-#include QMK_KEYBOARD_H
+/* Copyright 2024 DZTECH <moyi4681@Live.cn>
+ *
+ * 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 QMK_KEYBOARD_H
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /*