diff --git a/htdocs/product/card.php b/htdocs/product/card.php
index 073136e8807..df3f21a453a 100644
--- a/htdocs/product/card.php
+++ b/htdocs/product/card.php
@@ -1912,9 +1912,9 @@ if (is_object($objcanvas) && $objcanvas->displayCanvasExists($action))
 			if (!empty($conf->variants->enabled) && ($object->isProduct() || $object->isService())) {
 				$combination = new ProductCombination($db);
 
-				if (($fk_product_parent = $combination->getFkProductParentByFkProductChild($object->id)) > 0) {
+				if ($combination->fetchByFkProductChild($object->id) > 0) {
 					$prodstatic = new Product($db);
-					$prodstatic->fetch($fk_product_parent);
+					$prodstatic->fetch($combination->fk_product_parent);
 
 					// Parent product
 					print '<tr><td>'.$langs->trans("ParentProduct").'</td><td colspan="2">';