diff --git a/src/rest/RequestHandler.js b/src/rest/RequestHandler.js
index 08ecf3a..9d3c07a 100644
--- a/src/rest/RequestHandler.js
+++ b/src/rest/RequestHandler.js
@@ -40,7 +40,7 @@ const captchaMessage = [
 ];
 
 function parseResponse(res) {
-  if (res.headers.get('content-type').startsWith('application/json')) return res.json();
+  if (res.headers.get('content-type')?.startsWith('application/json')) return res.json();
   return res.arrayBuffer(); // Cre: TheDevYellowy
 }