diff --git a/libraries/dbi/mysql.dbi.lib.php b/libraries/dbi/mysql.dbi.lib.php
index 92047cb14..ea0a4a69f 100644
--- a/libraries/dbi/mysql.dbi.lib.php
+++ b/libraries/dbi/mysql.dbi.lib.php
@@ -78,7 +78,7 @@ function PMA_DBI_connect($user, $password, $is_controluser = false)
 
     if (empty($link) && ! $is_controluser) {
         if ($is_controluser) {
-            trigger_error($strControluserFailed, E_USER_WARNING);
+            trigger_error($GLOBALS['strControluserFailed'], E_USER_WARNING);
             return false;
         }
         PMA_auth_fails();
diff --git a/libraries/dbi/mysqli.dbi.lib.php b/libraries/dbi/mysqli.dbi.lib.php
index 26b37f9bf..1cf6a03b4 100644
--- a/libraries/dbi/mysqli.dbi.lib.php
+++ b/libraries/dbi/mysqli.dbi.lib.php
@@ -108,7 +108,7 @@ function PMA_DBI_connect($user, $password, $is_controluser = false)
 
     if ($return_value == false) {
         if ($is_controluser) {
-            trigger_error($strControluserFailed, E_USER_WARNING);
+            trigger_error($GLOBALS['strControluserFailed'], E_USER_WARNING);
             return false;
         }
         PMA_auth_fails();