diff --git src/wp-admin/js/revisions.js src/wp-admin/js/revisions.js
index 521e55c..bb64f31 100644
--- src/wp-admin/js/revisions.js
+++ src/wp-admin/js/revisions.js
@@ -6,8 +6,8 @@ window.wp = window.wp || {};
 
 	revisions = wp.revisions = { model: {}, view: {}, controller: {} };
 
-	// Link settings.
-	revisions.settings = _.isUndefined( _wpRevisionsSettings ) ? {} : _wpRevisionsSettings;
+	// Link post revisions data served from the back-end.
+	revisions.settings = _.isUndefined( window._wpRevisionsSettings ) ? {} : _wpRevisionsSettings;
 
 	// For debugging
 	revisions.debug = false;