1 files changed, 2 insertions, 2 deletions
diff --git a/synapse/rest/admin/users.py b/synapse/rest/admin/users.py
index 574cb90c74..c178c960c5 100644
--- a/synapse/rest/admin/users.py
+++ b/synapse/rest/admin/users.py
@@ -193,8 +193,8 @@ class UserRestServletV2(RestServlet):
                     raise SynapseError(400, "Invalid password")
                 else:
                     new_password = body["password"]
-                    await self._set_password_handler.set_password(
-                        target_user, new_password, requester
+                    await self.set_password_handler.set_password(
+                        target_user.to_string(), new_password, requester
                     )
 
             if "deactivated" in body: