diff --git a/src/Response.php b/src/Response.php
index 3338e51..8ae720f 100644
--- a/src/Response.php
+++ b/src/Response.php
@@ -192,7 +192,7 @@ public function setContent($content)
         $this->assertReponseSchema(
             $this->getFormat(),
             $this->getSchema(),
-            \json_encode($content)
+            $content
         );
     }