diff --git a/controllers/admin/AdminEmployeesController.php b/controllers/admin/AdminEmployeesController.php
index c7524a76a..796e75b4c 100644
--- a/controllers/admin/AdminEmployeesController.php
+++ b/controllers/admin/AdminEmployeesController.php
@@ -111,7 +111,7 @@ class AdminEmployeesControllerCore extends AdminController
 
 		$path = _PS_ADMIN_DIR_.'/themes/';
 		foreach (scandir($path) as $theme)
-			if (file_exists($path.$theme.'/css/admin.css'))
+			if ($theme[0] != '.' && is_dir($path.$theme) && file_exists($path.$theme.'/css/admin.css'))
 				$this->themes[] = $theme;
 
 		$home_tab = Tab::getInstanceFromClassName('adminHome');