diff --git a/app/src/util/fetch.ts b/app/src/util/fetch.ts
index 22f43e0fc..c5bf85f1f 100644
--- a/app/src/util/fetch.ts
+++ b/app/src/util/fetch.ts
@@ -35,7 +35,7 @@ export const fetchPost = (url: string, data?: any, cb?: (response: IWebSocketDat
                 code: response.status,
             };
         } else {
-            if (response.headers.get("content-type").indexOf("application/json") > -1) {
+            if (response.headers.get("content-type")?.indexOf("application/json") > -1) {
                 return response.json();
             } else {
                 return response.text();