diff --git a/src/ng/route.js b/src/ng/route.js
index e9b62bee0d1f..587e64a70e90 100644
--- a/src/ng/route.js
+++ b/src/ng/route.js
@@ -263,8 +263,9 @@ function $RouteProvider(){
      * {@link ng.directive:ngView ngView} listens for the directive
      * to instantiate the controller and render the view.
      *
+     * @param {Object} angularEvent Synthetic event object.
      * @param {Route} current Current route information.
-     * @param {Route} previous Previous route information.
+     * @param {Route|Undefined} previous Previous route information, or undefined if current is first route entered.
      */
 
     /**