diff --git a/src/datepicker/datepicker.js b/src/datepicker/datepicker.js
index c7f185e9ea..6116f139a9 100644
--- a/src/datepicker/datepicker.js
+++ b/src/datepicker/datepicker.js
@@ -325,7 +325,7 @@ angular.module('ui.bootstrap.datepicker', ['ui.bootstrap.dateparser', 'ui.bootst
     }
   };
 
-  $scope.$on("$destroy", function() {
+  $scope.$on('$destroy', function() {
     //Clear all watch listeners on destroy
     while (watchListeners.length) {
       watchListeners.shift()();