diff --git a/roomserver/roomserver_test.go b/roomserver/roomserver_test.go
index 5c9540071..6b157b307 100644
--- a/roomserver/roomserver_test.go
+++ b/roomserver/roomserver_test.go
@@ -168,7 +168,7 @@ func mustCreateRoomserverAPI(t *testing.T) (api.RoomserverInternalAPI, *dummyPro
 	dp := &dummyProducer{
 		topic: cfg.Global.Kafka.TopicFor(config.TopicOutputRoomEvent),
 	}
-	cache, err := caching.NewInMemoryLRUCache(false)
+	cache, err := caching.NewInMemoryLRUCache(&cfg.Global)
 	if err != nil {
 		t.Fatalf("failed to make caches: %s", err)
 	}