diff --git a/lib/Exception/BlockChypException.php b/lib/Exception/BlockChypException.php
index a6c42ed..6c720a8 100644
--- a/lib/Exception/BlockChypException.php
+++ b/lib/Exception/BlockChypException.php
@@ -24,7 +24,10 @@ public static function factory($message, $httpStatus = null, $httpBody = null)
         $instance = new static($message);
         $instance->setHttpStatus($httpStatus);
         $instance->setHttpBody($httpBody);
-        $instance->setJsonBody(json_decode($httpBody, true));
+        if (isset($httpBody)) {
+            $httpBody = json_decode($httpBody, true);
+        }
+        $instance->setJsonBody($httpBody);
 
         return $instance;
     }