diff --git a/ChangeLog b/ChangeLog
index 5bc0d72639..f8b6de269d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,7 @@ phpMyAdmin - ChangeLog
 
 3.5.2.0 (not yet released)
 - bug #3521416 [interface] JS error when editing index
+- bug #3521313 [core] Call to undefined function __()
 
 3.5.1.0 (not yet released)
 - bug #3510784 [edit] Limit clause ignored when sort order is remembered
diff --git a/libraries/Config.class.php b/libraries/Config.class.php
index 702f78f39f..e17886121b 100644
--- a/libraries/Config.class.php
+++ b/libraries/Config.class.php
@@ -724,7 +724,10 @@ class PMA_Config
         if (! is_readable($this->getSource())) {
             $this->source_mtime = 0;
             die(
-                sprintf(__('Existing configuration file (%s) is not readable.'),
+                sprintf(
+                    function_exists('__')
+                    ? __('Existing configuration file (%s) is not readable.')
+                    : 'Existing configuration file (%s) is not readable.',
                     $this->getSource()
                 )
             );