diff --git a/source/app/app_config.c b/source/app/app_config.c
index e74ab4b..f313da4 100644
--- a/source/app/app_config.c
+++ b/source/app/app_config.c
@@ -218,8 +218,6 @@ U8 L3_find_rfid_table(U16 rfidno)
 	return LED_BTN_NUM;
 }
 
-extern void L3_task_rfid_init(void);
-
 void L3_set_power_mode(U8 mode)
 {
 	// if(R.power_mode == POWER_NORMAL)