diff --git a/jupyterhub/orm.py b/jupyterhub/orm.py
index 8516cd97..d21a818c 100644
--- a/jupyterhub/orm.py
+++ b/jupyterhub/orm.py
@@ -411,7 +411,7 @@ class OAuthAccessToken(Hashed, Base):
     refresh_expires_at = Column(Integer)
     user_id = Column(Integer, ForeignKey('users.id', ondelete='CASCADE'))
     user = relationship(User)
-    session = None # for API-equivalence with APIToken
+    service = None # for API-equivalence with APIToken
 
     # from Hashed
     hashed = Column(Unicode(64))