diff --git a/controllers/admin/AdminProductsController.php b/controllers/admin/AdminProductsController.php
index 969d55d63..914a1ef21 100644
--- a/controllers/admin/AdminProductsController.php
+++ b/controllers/admin/AdminProductsController.php
@@ -802,8 +802,7 @@ class AdminProductsControllerCore extends AdminController
 				{
 					if ($this->tabAccess['edit'] === '1')
 					{
-
-						if ($this->isProductFieldUpdated('available_date_attribute') && !Validate::isDateFormat(Tools::getValue('available_date_attribute')))
+						if ($this->isProductFieldUpdated('available_date_attribute') && (Tools::getValue('available_date_attribute') != '' &&!Validate::isDateFormat(Tools::getValue('available_date_attribute'))))
 							$this->errors[] = Tools::displayError('Invalid date format.');
 						else
 						{