diff --git a/src/Transformers/Request.php b/src/Transformers/Request.php
index 7aeafe7..cb6a475 100644
--- a/src/Transformers/Request.php
+++ b/src/Transformers/Request.php
@@ -92,7 +92,7 @@ protected function createIlluminateRequest($get, $post, $cookie, $files, $server
 
         $request = new SymfonyRequest($get, $post, [], $cookie, $files, $server, $content);
 
-        if (0 === strpos($request->headers->get('CONTENT_TYPE'), 'application/x-www-form-urlencoded')
+        if (0 === strpos($request->headers->get('CONTENT_TYPE', ''), 'application/x-www-form-urlencoded')
             && in_array(strtoupper($request->server->get('REQUEST_METHOD', 'GET')), ['PUT', 'DELETE', 'PATCH'])
         ) {
             parse_str($request->getContent(), $data);