diff --git a/src/ng/interpolate.js b/src/ng/interpolate.js
index 9b2651b63e17..b6f38ae9f05c 100644
--- a/src/ng/interpolate.js
+++ b/src/ng/interpolate.js
@@ -286,7 +286,7 @@ function $InterpolateProvider() {
           // all of these properties are undocumented for now
           exp: text, //just for compatibility with regular watchers created via $watch
           expressions: expressions,
-          $$watchDelegate: function(scope, listener, objectEquality) {
+          $$watchDelegate: function(scope, listener) {
             var lastValue;
             return scope.$watchGroup(parseFns, function interpolateFnWatcher(values, oldValues) {
               var currValue = compute(values);
@@ -294,7 +294,7 @@ function $InterpolateProvider() {
                 listener.call(this, currValue, values !== oldValues ? lastValue : currValue, scope);
               }
               lastValue = currValue;
-            }, objectEquality);
+            });
           }
         });
       }