diff --git a/synapse/handlers/set_password.py b/synapse/handlers/set_password.py
index 584ff500da4b..12657ca69836 100644
--- a/synapse/handlers/set_password.py
+++ b/synapse/handlers/set_password.py
@@ -58,7 +58,7 @@ def set_password(
             except_device_id = requester.device_id if requester else None
             except_access_token_id = requester.access_token_id if requester else None
 
-            # First delete all his other devices.
+            # First delete all of their other devices.
             yield self._device_handler.delete_all_devices_for_user(
                 user_id, except_device_id=except_device_id
             )