diff --git a/src/04-directive-soundManager.js b/src/04-directive-soundManager.js
index 33d9b92..d1386f5 100644
--- a/src/04-directive-soundManager.js
+++ b/src/04-directive-soundManager.js
@@ -1,5 +1,5 @@
-ngSoundManager.directive('soundManager', ['$filter', 'angularPlayer',
-    function($filter, angularPlayer) {
+ngSoundManager.directive('soundManager', ['$filter', '$timeout', 'angularPlayer',
+    function($filter, $timeout, angularPlayer) {
         return {
             restrict: "E",
             link: function(scope, element, attrs) {