diff --git a/src/user_code.hpp b/src/user_code.hpp
index 101ce22..cae5dec 100644
--- a/src/user_code.hpp
+++ b/src/user_code.hpp
@@ -71,6 +71,7 @@ void update_lcd_row1();
 void update_lcd_row2();
 void update_lcd_row3();
 void update_lcd_row4();
+void update_lcd_ac();
 void update_toggle_button();
 void light_toggle_pop_callback(void *ptr);
 void row1_lv1_pop_callback(void *ptr);