diff --git a/htdocs/modulebuilder/template/myobject_card.php b/htdocs/modulebuilder/template/myobject_card.php
index e5223c86608..ed6a421ac86 100644
--- a/htdocs/modulebuilder/template/myobject_card.php
+++ b/htdocs/modulebuilder/template/myobject_card.php
@@ -389,7 +389,8 @@ if ($object->id > 0 && (empty($action) || ($action != 'edit' && $action != 'crea
 
     	if (! empty($object->lines))
     	{
-    	    $ret = $object->printObjectLines($action, $mysoc, $soc, $lineid, 1);
+            // printObjectLines return void
+    	    $object->printObjectLines($action, $mysoc, $soc, $lineid, 1);
     	}
 
     	// Form to add new line