diff --git a/src/main.c b/src/main.c
index 03d39b46d42..9b82cbca685 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1436,6 +1436,7 @@ int main_loop(void)
 					if (arm_timer()<0) goto error;
 					timer_main();
 				}else{
+					/* do nothing for main timer */
 				}
 
 		if(sr_wtimer_start()<0) {