diff --git a/libraries/relation.lib.php b/libraries/relation.lib.php
index a61eb92a8a..6f882aecff 100644
--- a/libraries/relation.lib.php
+++ b/libraries/relation.lib.php
@@ -128,7 +128,7 @@ function PMA_printRelationsParamDiagnostic($cfgRelation)
     PMA_printDiagMessageForParameter(
         'table_info',
         isset($cfgRelation['table_info']),
-        $messages
+        $messages,
         'table_info'
     );