diff --git a/jupyterhub/app.py b/jupyterhub/app.py
index b6b89293..18d61347 100644
--- a/jupyterhub/app.py
+++ b/jupyterhub/app.py
@@ -1058,7 +1058,6 @@ class JupyterHub(Application):
                 base_url=self.base_url,
                 db=self.db, orm=orm_service,
                 domain=domain, host=host,
-                hub_api_url=self.hub.api_url,
                 hub=self.hub,
             )
 
diff --git a/jupyterhub/services/service.py b/jupyterhub/services/service.py
index 063d7a19..4e4d29eb 100644
--- a/jupyterhub/services/service.py
+++ b/jupyterhub/services/service.py
@@ -258,7 +258,7 @@ class Service(LoggingConfigurable):
 
         env['JUPYTERHUB_SERVICE_NAME'] = self.name
         env['JUPYTERHUB_API_TOKEN'] = self.api_token
-        env['JUPYTERHUB_API_URL'] = self.hub_api_url
+        env['JUPYTERHUB_API_URL'] = self.hub.api_url
         env['JUPYTERHUB_BASE_URL'] = self.base_url
         if self.url:
             env['JUPYTERHUB_SERVICE_URL'] = self.url