diff --git a/synapse/handlers/appservice.py b/synapse/handlers/appservice.py
index 0f834c93ab..f1b71029e5 100644
--- a/synapse/handlers/appservice.py
+++ b/synapse/handlers/appservice.py
@@ -14,7 +14,8 @@
 # limitations under the License.
 
 import logging
-from typing import Collection, List, Union
+from typing import List, Union
+from synapse.types import Collection
 
 from prometheus_client import Counter