diff --git a/htdocs/admin/modules.php b/htdocs/admin/modules.php
index 18546d67dc1..747a3cd41c3 100644
--- a/htdocs/admin/modules.php
+++ b/htdocs/admin/modules.php
@@ -691,7 +691,7 @@ if ($mode == 'common')
         	}
         	else if (! empty($objMod->always_enabled) || ((! empty($conf->multicompany->enabled) && $objMod->core_enabled) && ($user->entity || $conf->entity!=1)))
         	{
-        		if ($objMod->alreadyUsed()) print $langs->trans("Used");
+        		if (method_exists($objMod, 'alreadyUsed') && $objMod->alreadyUsed()) print $langs->trans("Used");
         		else print $langs->trans("Required");
         		if (! empty($conf->multicompany->enabled) && $user->entity) $disableSetup++;
         	}