1 files changed, 4 insertions, 2 deletions
diff --git a/tests/rest/client/test_mutual_rooms.py b/tests/rest/client/test_mutual_rooms.py
index a4327f7ace..22fddbd6d6 100644
--- a/tests/rest/client/test_mutual_rooms.py
+++ b/tests/rest/client/test_mutual_rooms.py
@@ -11,6 +11,8 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+from urllib.parse import quote
+
 from twisted.test.proto_helpers import MemoryReactor
 
 import synapse.rest.admin
@@ -44,8 +46,8 @@ class UserMutualRoomsTest(unittest.HomeserverTestCase):
     def _get_mutual_rooms(self, token: str, other_user: str) -> FakeChannel:
         return self.make_request(
             "GET",
-            "/_matrix/client/unstable/uk.half-shot.msc2666/user/mutual_rooms/%s"
-            % other_user,
+            "/_matrix/client/unstable/uk.half-shot.msc2666/user/mutual_rooms"
+            f"?user_id={quote(other_user)}",
             access_token=token,
         )