diff --git a/bricks/utils.js b/bricks/utils.js
index 75a41bd..eb52d15 100755
--- a/bricks/utils.js
+++ b/bricks/utils.js
@@ -117,7 +117,7 @@ var schedule_interval = function(f, t){
 		func();
 		schedule_once(mf.bind(func, t), t);
 	}
-	return schedule_once(mf.bind(f,t), t);
+	schedule_once(mf.bind(f,t), t);
 }
 
 var debug = function(){