diff --git a/src/Http/Request.php b/src/Http/Request.php
index 585fb5e9..c6a9e5ad 100644
--- a/src/Http/Request.php
+++ b/src/Http/Request.php
@@ -38,9 +38,9 @@ class Request extends SymfonyRequest
      */
     public function has($key)
     {
-        $value = $this->input($key, null);
+        $value = $this->input($key);
 
-        return !($value === null);
+        return !is_null($value);
     }
 
     /**