diff --git a/jquery.mousewheel.js b/jquery.mousewheel.js
index 3eadb7ed..4d6a080d 100755
--- a/jquery.mousewheel.js
+++ b/jquery.mousewheel.js
@@ -198,15 +198,13 @@
         // a different lowestDelta
         // Ex: trackpad = 3 and mouse wheel = 120
         if (nullLowestDeltaTimeout) { clearTimeout(nullLowestDeltaTimeout); }
-        nullLowestDeltaTimeout = setTimeout(nullLowestDelta, 200);
+        nullLowestDeltaTimeout = setTimeout(function() {
+            lowestDelta = null;
+        }, 200);
 
         return ($.event.dispatch || $.event.handle).apply(this, args);
     }
 
-    function nullLowestDelta() {
-        lowestDelta = null;
-    }
-
     function shouldAdjustOldDeltas(orgEvent, absDelta) {
         // If this is an older event and the delta is divisable by 120,
         // then we are assuming that the browser is treating this as an