diff --git a/keyboards/yoichiro/lunakey_mini/keymaps/via/rules.mk b/keyboards/yoichiro/lunakey_mini/keymaps/via/rules.mk
index 8b55a3b7..989d0d17 100644
--- a/keyboards/yoichiro/lunakey_mini/keymaps/via/rules.mk
+++ b/keyboards/yoichiro/lunakey_mini/keymaps/via/rules.mk
@@ -2,4 +2,4 @@ RGBLIGHT_ENABLE = yes        # Enable keyboard RGB Underglow
 AUDIO_ENABLE = no            # Enable Audio output
 OLED_ENABLE = no      # Enable OLED Display
 VIA_ENABLE = yes             # Enable VIA support
-LTO_ENABLE = yes             # CFLAGS=flto
+LTO_ENABLE = yes             # Reduce firmware size