diff --git a/lang/en/activitynames.php b/lang/en/activitynames.php
index 557390f6cea..9f08dbb603f 100644
--- a/lang/en/activitynames.php
+++ b/lang/en/activitynames.php
@@ -1,6 +1,6 @@
 <?php /// $Id$
 
-$string['filtername'] = "Activity Names Auto-linking";
+$string['filtername'] = 'Activity Names Auto-linking';
 
 ?>