diff --git a/Model/Feed.php b/Model/Feed.php
index 85c031b..d85c963 100644
--- a/Model/Feed.php
+++ b/Model/Feed.php
@@ -50,7 +50,7 @@ public function getFeedUrl()
      */
     public function checkUpdate()
     {
-        if (!(boolean) $this->_backendConfig->getValue('mageplaza/general/notice_enable')) {
+        if (!(bool) $this->_backendConfig->getValue('mageplaza/general/notice_enable')) {
             return $this;
         }
 
diff --git a/composer.json b/composer.json
index 4e8ed64..39dfff7 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
   "name": "mageplaza/module-core",
   "description": "Mageplaza Core for Magento 2",
   "type": "magento2-module",
-  "version": "1.5.15",
+  "version": "1.5.16",
   "license": "proprietary",
   "authors": [
     {