diff --git a/src/utils/createMatrixClient.ts b/src/utils/createMatrixClient.ts
index 0012e06bb7b..1bcfcba19e1 100644
--- a/src/utils/createMatrixClient.ts
+++ b/src/utils/createMatrixClient.ts
@@ -56,7 +56,6 @@ export default function createMatrixClient(opts: ICreateClientOpts): MatrixClien
             dbName: "riot-web-sync",
             localStorage,
             workerFactory: () => new IndexedDBWorker(),
-            userId: opts.userId,
         });
     } else if (localStorage) {
         storeOpts.store = new MemoryStore({ localStorage });