1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/rest/client/v2_alpha/filter.py b/synapse/rest/client/v2_alpha/filter.py
index 09e44e8ae0..81a3e95155 100644
--- a/synapse/rest/client/v2_alpha/filter.py
+++ b/synapse/rest/client/v2_alpha/filter.py
@@ -93,7 +93,7 @@ class CreateFilterRestServlet(RestServlet):
 
         filter_id = yield self.filtering.add_user_filter(
             user_localpart=target_user.localpart,
-            definition=content,
+            user_filter=content,
         )
 
         defer.returnValue((200, {"filter_id": str(filter_id)}))