diff --git a/tests/rest/client/sliding_sync/test_sliding_sync.py b/tests/rest/client/sliding_sync/test_sliding_sync.py
index 8af260333e..a7b0006170 100644
--- a/tests/rest/client/sliding_sync/test_sliding_sync.py
+++ b/tests/rest/client/sliding_sync/test_sliding_sync.py
@@ -1020,7 +1020,9 @@ class SlidingSyncTestCase(SlidingSyncBase):
         # Make the Sliding Sync request
         response_body, from_token = self.do_sync(sync_body, tok=user1_tok)
         # Make sure we see room1
-        self.assertIncludes(set(response_body["rooms"].keys()), {room_id1}, exact=True)
+        self.assertIncludes(
+            set(response_body["rooms"].keys()), {space_room_id}, exact=True
+        )
         self.assertEqual(response_body["rooms"][space_room_id]["initial"], True)
 
         # Trigger a state reset