diff --git a/modules/system/system.install b/modules/system/system.install
index c06850a49dda589e0956fea6712312954efbebaa..f37b8266b4b28400c8dc769278c252772bab73e7 100644
--- a/modules/system/system.install
+++ b/modules/system/system.install
@@ -629,6 +629,9 @@ function system_schema() {
       ),
     ),
     'primary key' => array('type'),
+    'indexes' => array(
+      'title' => array('title'),
+    ),
   );
 
   // This table's name is plural as some versions of MySQL can't create a