1 files changed, 9 insertions, 2 deletions
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 20ee2f203a..78d488f2b1 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -31,7 +31,12 @@ from typing import (
 import attr
 from prometheus_client import Counter
 
-from synapse.api.constants import EventContentFields, EventTypes, Membership
+from synapse.api.constants import (
+    AccountDataTypes,
+    EventContentFields,
+    EventTypes,
+    Membership,
+)
 from synapse.api.filtering import FilterCollection
 from synapse.api.presence import UserPresenceState
 from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
@@ -2331,7 +2336,9 @@ class SyncHandler:
 
             account_data_events = []
             if tags is not None:
-                account_data_events.append({"type": "m.tag", "content": {"tags": tags}})
+                account_data_events.append(
+                    {"type": AccountDataTypes.TAG, "content": {"tags": tags}}
+                )
 
             for account_data_type, content in account_data.items():
                 account_data_events.append(