diff --git a/htdocs/install/fileconf.php b/htdocs/install/fileconf.php
index d045067e2f2..1ea8e6f9f25 100644
--- a/htdocs/install/fileconf.php
+++ b/htdocs/install/fileconf.php
@@ -58,7 +58,7 @@ pHeader($langs->trans("ConfigurationFile"),"etape0");
if (! empty($force_install_message_doliwamp))
{
- print $langs->trans("KeepDefaultValues").'
';
+ print ''.$langs->trans("KeepDefaultValues").'
';
}
?>