diff --git a/src/matrix/net/HomeServerApi.ts b/src/matrix/net/HomeServerApi.ts
index 45e8a56c..e5071b87 100644
--- a/src/matrix/net/HomeServerApi.ts
+++ b/src/matrix/net/HomeServerApi.ts
@@ -156,22 +156,19 @@ export class HomeServerApi {
         return this._unauthedRequest("GET", this._url("/login"));
     }
 
-    register(username: string | null, password: string, initialDeviceDisplayName: string, auth?: Record<string, any>, inhibitLogin?: boolean , options?: IRequestOptions): IHomeServerRequest {
-        // todo: This is so that we disable cache-buster because it would cause the hs to respond with error
-        // see https://github.com/matrix-org/synapse/issues/7722
-        const _options = options ?? {};
-        Object.assign(_options, { allowedErrors: [401] });
+    register(username: string | null, password: string, initialDeviceDisplayName: string, auth?: Record<string, any>, inhibitLogin: boolean = true , options: IRequestOptions = {}): IHomeServerRequest {
+        Object.assign(options, { allowedErrors: [401] });
         const body = {
             auth,
             password,
             initial_device_displayname: initialDeviceDisplayName,
-            inhibit_login: inhibitLogin ?? false,
+            inhibit_login: inhibitLogin,
         };
         if (username) {
             // username is optional for registration
             Object.assign(body, { username });
         }
-        return this._unauthedRequest( "POST", this._url("/register", CS_V3_PREFIX), undefined, body, _options);
+        return this._unauthedRequest( "POST", this._url("/register", CS_V3_PREFIX), undefined, body, options);
     }
 
     passwordLogin(username: string, password: string, initialDeviceDisplayName: string, options?: IRequestOptions): IHomeServerRequest {