diff --git a/src/stores/room-list/RoomListStore.ts b/src/stores/room-list/RoomListStore.ts
index febd9aad9b..8c17da06fe 100644
--- a/src/stores/room-list/RoomListStore.ts
+++ b/src/stores/room-list/RoomListStore.ts
@@ -114,7 +114,7 @@ export class RoomListStoreClass extends AsyncStoreWithClient<IState> {
     // Public for test usage. Do not call this.
     public async makeReady(forcedClient?: MatrixClient) {
         if (forcedClient) {
-            super.readyStore.useUnitTestClient(forcedClient);
+            this.readyStore.useUnitTestClient(forcedClient);
         }
 
         this.checkLoggingEnabled();