diff --git a/bsp/bluetrum/libraries/hal_drivers/drv_flash.c b/bsp/bluetrum/libraries/hal_drivers/drv_flash.c
index d45213743f..37d150a90f 100644
--- a/bsp/bluetrum/libraries/hal_drivers/drv_flash.c
+++ b/bsp/bluetrum/libraries/hal_drivers/drv_flash.c
@@ -137,4 +137,4 @@ int fal_ops_test(void)
 MSH_CMD_EXPORT(fal_ops_test, "fal_ops_test");
 
 #endif
-#endif
+#endif/* BSP_USING_ON_CHIP_FLASH */