1 files changed, 1 insertions, 0 deletions
diff --git a/lib/scripts/events.js b/lib/scripts/events.js
index 33bd1429e..907526375 100644
--- a/lib/scripts/events.js
+++ b/lib/scripts/events.js
@@ -40,6 +40,7 @@ function handleEvent(event) {
     var handlers = this.events[event.type];
     // execute each event handler
     for (var i in handlers) {
+        if (!handlers.hasOwnProperty(i)) continue;
         this.$$handleEvent = handlers[i];
         if (this.$$handleEvent(event) === false) {
             returnValue = false;