diff --git a/src/ReservedWhiteList.php b/src/ReservedWhiteList.php
index 5574295..d0da001 100644
--- a/src/ReservedWhiteList.php
+++ b/src/ReservedWhiteList.php
@@ -50,7 +50,7 @@ class ReservedWhiteList extends dcSpamFilter
         $throw = false;
 
         try {
-            $wlc = new Core();
+            $wlc = new Utils();
 
             if (true === $wlc->isReserved($author, $email)) {
                 $status = 'reserved name';
@@ -75,7 +75,7 @@ class ReservedWhiteList extends dcSpamFilter
 
     public function gui(string $url): string
     {
-        $wlc      = new Core();
+        $wlc      = new Utils();
         $comments = [];
 
         try {
diff --git a/src/UnmoderatedWhiteList.php b/src/UnmoderatedWhiteList.php
index b5a0c52..6eca617 100644
--- a/src/UnmoderatedWhiteList.php
+++ b/src/UnmoderatedWhiteList.php
@@ -49,7 +49,7 @@ class UnmoderatedWhiteList extends dcSpamFilter
         }
 
         try {
-            $wlc = new Core();
+            $wlc = new Utils();
             if ($wlc->isUnmoderated($email)) {
                 $status = 'unmoderated';
 
@@ -64,7 +64,7 @@ class UnmoderatedWhiteList extends dcSpamFilter
 
     public function gui(string $url): string
     {
-        $wlc   = new Core();
+        $wlc   = new Utils();
         $posts = $comments = [];
 
         try {
diff --git a/src/Utils.php b/src/Utils.php
index 154c06f..b84c328 100644
--- a/src/Utils.php
+++ b/src/Utils.php
@@ -24,7 +24,7 @@ use dcUtils;
  * @brief White list filters methods
  * @since 2.6
  */
-class Core
+class Utils
 {
     public $con;
     public $blog;
@@ -36,7 +36,7 @@ class Core
     public function __construct()
     {
         $this->con         = dcCore::app()->con;
-        $this->blog        = dcCore::app()->con->escape(dcCore::app()->blog->id);
+        $this->blog        = dcCore::app()->con->escapeStr((string) dcCore::app()->blog->id);
         $this->settings    = dcCore::app()->blog->settings->get(My::id());
         $this->unmoderated = self::decode($this->settings->get('unmoderated'));
         $this->reserved    = self::decode($this->settings->get('reserved'));