diff --git a/openpype/modules/ftrack/event_handlers_server/event_sync_to_avalon.py b/openpype/modules/ftrack/event_handlers_server/event_sync_to_avalon.py
index e60045bd50..1dd056adee 100644
--- a/openpype/modules/ftrack/event_handlers_server/event_sync_to_avalon.py
+++ b/openpype/modules/ftrack/event_handlers_server/event_sync_to_avalon.py
@@ -1259,7 +1259,7 @@ class SyncToAvalonEvent(BaseEvent):
             self.process_session,
             entity,
             hier_attrs,
-            self.cust_attr_types_by_id
+            self.cust_attr_types_by_id.values()
         )
         for key, val in hier_values.items():
             output[key] = val