diff --git a/tests/Feature/ClientApiTest.php b/tests/Feature/ClientApiTest.php
index 45813aa56d2d..5d561c346d8f 100644
--- a/tests/Feature/ClientApiTest.php
+++ b/tests/Feature/ClientApiTest.php
@@ -78,6 +78,8 @@ class ClientApiTest extends TestCase
             nlog($message);
         }
 
+        $this->assertTrue($response->headers->get('content-type') == 'application/pdf');
+
         $response->assertStatus(200);
 
     }