diff --git a/src/wp-includes/js/wp-backbone.js b/src/wp-includes/js/wp-backbone.js
index 0db9161faa..8cbfe6f508 100644
--- a/src/wp-includes/js/wp-backbone.js
+++ b/src/wp-includes/js/wp-backbone.js
@@ -21,7 +21,7 @@ window.wp = window.wp || {};
 		//
 		// Returns an array of all subviews.
 		all: function() {
-			return _.flatten( this._views );
+			return _.flatten( _.values( this._views ) ); 
 		},
 
 		// ### Get a selector's subviews