diff --git a/classes/controller/FrontController.php b/classes/controller/FrontController.php
index 4b6c0503f..14dc91682 100755
--- a/classes/controller/FrontController.php
+++ b/classes/controller/FrontController.php
@@ -721,7 +721,9 @@ class FrontControllerCore extends Controller
 			$this->setMobileMedia();
 			return true;
 		}
-		$this->addCSS(_THEME_CSS_DIR_.'grid_prestashop.css', 'all');
+
+		if (Tools::file_exists_cache(_PS_ROOT_DIR_.Tools::str_replace_once(__PS_BASE_URI__, DIRECTORY_SEPARATOR, _THEME_CSS_DIR_.'grid_prestashop.css')))
+			$this->addCSS(_THEME_CSS_DIR_.'grid_prestashop.css', 'all');
 		$this->addCSS(_THEME_CSS_DIR_.'global.css', 'all');
 		$this->addjquery();
 		$this->addjqueryPlugin('easing');