diff --git a/libraries/common.lib.php b/libraries/common.lib.php
index 3c3c36442..5f8da3c5b 100644
--- a/libraries/common.lib.php
+++ b/libraries/common.lib.php
@@ -1405,7 +1405,7 @@ if (typeof(window.parent) != 'undefined'
             }
 
             $max_characters = 1000;
-            if (strlen($query_base) > $max_characters) {
+            if (! defined('PMA_QUERY_TOO_BIG') && strlen($query_base) > $max_characters) {
                 define('PMA_QUERY_TOO_BIG',1);
             }