diff --git a/src/ng/rootScope.js b/src/ng/rootScope.js
index 29295f76a..7b615cf46 100644
--- a/src/ng/rootScope.js
+++ b/src/ng/rootScope.js
@@ -979,8 +979,11 @@ function $RootScopeProvider(){
 
         var self = this;
         return function() {
-          namedListeners[indexOf(namedListeners, listener)] = null;
-          decrementListenerCount(self, 1, name);
+          var indexOfListener = indexOf(namedListeners, listener);
+          if (indexOfListener !== -1) {
+            namedListeners[indexOfListener] = null;
+            decrementListenerCount(self, 1, name);
+          }
         };
       },
 
diff --git a/test/ng/rootScopeSpec.js b/test/ng/rootScopeSpec.js
index cd86c71d3..7182bc07d 100644
--- a/test/ng/rootScopeSpec.js
+++ b/test/ng/rootScopeSpec.js
@@ -1361,6 +1361,31 @@ describe('Scope', function() {
           expect(child1.$$listenerCount).toEqual({event1: 1});
           expect(child2.$$listenerCount).toEqual({});
         }));
+
+
+        it('should not decrement $$listenerCount when called second time', inject(function($rootScope) {
+          var child = $rootScope.$new(),
+              listener1Spy = jasmine.createSpy(),
+              listener2Spy = jasmine.createSpy();
+
+          child.$on('abc', listener1Spy);
+          expect($rootScope.$$listenerCount).toEqual({abc: 1});
+          expect(child.$$listenerCount).toEqual({abc: 1});
+
+          var deregisterEventListener = child.$on('abc', listener2Spy);
+          expect($rootScope.$$listenerCount).toEqual({abc: 2});
+          expect(child.$$listenerCount).toEqual({abc: 2});
+
+          deregisterEventListener();
+
+          expect($rootScope.$$listenerCount).toEqual({abc: 1});
+          expect(child.$$listenerCount).toEqual({abc: 1});
+
+          deregisterEventListener();
+
+          expect($rootScope.$$listenerCount).toEqual({abc: 1});
+          expect(child.$$listenerCount).toEqual({abc: 1});
+        }));
       });
     });