diff --git a/htdocs/core/lib/product.lib.php b/htdocs/core/lib/product.lib.php
index f75f354903a..088746a229c 100644
--- a/htdocs/core/lib/product.lib.php
+++ b/htdocs/core/lib/product.lib.php
@@ -172,9 +172,9 @@ function product_prepare_head($object)
 			$h++;
 		}
 	}
-	if (!getDolGlobalString('MAIN_DISABLE_CONTACTS_TAB')) {
+	if (!getDolGlobalString('MAIN_ENABLE_PRODUCTS_CONTACTS_TAB')) {
 		$objectsrc = $object;
-		if ($object->origin == 'product' && $object->origin_id > 0) {
+		if ($object->origin_type == 'product' && $object->origin_id > 0) {
 			$objectsrc = new Product($db);
 			$objectsrc->fetch($object->origin_id);
 		}