diff --git a/libraries/schema/User_Schema.class.php b/libraries/schema/User_Schema.class.php
index d285836f75..c46f8a740e 100644
--- a/libraries/schema/User_Schema.class.php
+++ b/libraries/schema/User_Schema.class.php
@@ -856,9 +856,8 @@ class PMA_User_Schema
     private function _editCoordinates($db, $cfgRelation)
     {
         for ($i = 0; $i < $this->c_table_rows; $i++) {
-            $arrvalue = 'c_table_' . $i;
-            global $$arrvalue;
-            $arrvalue = $$arrvalue;
+            $arrvalue = $_POST['c_table_' . $i];
+
             if (! isset($arrvalue['x']) || $arrvalue['x'] == '') {
                 $arrvalue['x'] = 0;
             }