diff --git a/jupyterhub/apihandlers/users.py b/jupyterhub/apihandlers/users.py
index e5b109dd..02935dda 100644
--- a/jupyterhub/apihandlers/users.py
+++ b/jupyterhub/apihandlers/users.py
@@ -239,7 +239,9 @@ class UserAPIHandler(APIHandler):
         await maybe_future(self.authenticator.delete_user(user))
 
         # delete the user's PVC
-        await user.spawner.delete_namespaced_persistent_volume_claim(user.spawner.pvc_name, user.spawner.namespace)
+        await user.spawner.delete_namespaced_persistent_volume_claim(
+            user.spawner.pvc_name, user.spawner.namespace
+        )
 
         # remove from registry
         self.users.delete(user)