diff --git a/lib/jli.js b/lib/jli.js
index a8f97d2..6e13f5a 100755
--- a/lib/jli.js
+++ b/lib/jli.js
@@ -134,8 +134,7 @@ function createCSSClassToggler(elem, class_list, callback_a, callback_b){
 
 		// pre callback...
 		if(callback_pre != null){
-			var res = callback_pre(action)
-			if(res === false){
+			if(callback_pre(action) === false){
 				return
 			}
 		}