1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 26be6060c3..ec2c52ab93 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -209,7 +209,7 @@ class RegistrationStore(background_updates.BackgroundUpdateStore):
                 " WHERE lower(name) = lower(?)"
             )
             txn.execute(sql, (user_id,))
-            return dict(txn.fetchall())
+            return dict(txn)
 
         return self.runInteraction("get_users_by_id_case_insensitive", f)