diff --git a/htdocs/product/class/product.class.php b/htdocs/product/class/product.class.php
index 39d514defa1..62365027f6d 100644
--- a/htdocs/product/class/product.class.php
+++ b/htdocs/product/class/product.class.php
@@ -363,6 +363,7 @@ class Product extends CommonObject
 			{
 				// Product already exists with this ref
 				$langs->load("products");
+				$error++;
 				$this->error = "ErrorProductAlreadyExists";
 			}
 		}