diff --git a/src/applications/config/controller/settings/PhabricatorConfigSettingsListController.php b/src/applications/config/controller/settings/PhabricatorConfigSettingsListController.php
--- a/src/applications/config/controller/settings/PhabricatorConfigSettingsListController.php
+++ b/src/applications/config/controller/settings/PhabricatorConfigSettingsListController.php
@@ -7,7 +7,7 @@
     $viewer = $request->getViewer();
 
     $filter = $request->getURIData('filter');
-    if (!strlen($filter)) {
+    if (!phutil_nonempty_string($filter)) {
       $filter = 'settings';
     }