diff --git a/htdocs/core/lib/security.lib.php b/htdocs/core/lib/security.lib.php
index 73bb51d464a..235421a598e 100644
--- a/htdocs/core/lib/security.lib.php
+++ b/htdocs/core/lib/security.lib.php
@@ -662,6 +662,7 @@ function accessforbidden($message='',$printheader=1,$printfooter=1,$showonlymess
     {
         include_once DOL_DOCUMENT_ROOT.'/core/class/translate.class.php';
         $langs=new Translate('',$conf);
+        $langs->setDefaultLang();
     }
 
     $langs->load("errors");