diff --git a/Block/Html/Topmenu.php b/Block/Html/Topmenu.php
index 2938b29..a0e5e8d 100644
--- a/Block/Html/Topmenu.php
+++ b/Block/Html/Topmenu.php
@@ -16,7 +16,7 @@ protected function _getHtml(
         \Magento\Framework\Data\Tree\Node $menuTree,
         $childrenWrapClass,
         $limit,
-        $colBrakes = []
+        array $colBrakes = []
     ) {
         $html = '';