diff --git a/neutron/db/migration/alembic_migrations/versions/338d7508968c_vpnaas_peer_address_.py b/neutron/db/migration/alembic_migrations/versions/338d7508968c_vpnaas_peer_address_.py
index 2b57cdbeab5..56064be3ab2 100644
--- a/neutron/db/migration/alembic_migrations/versions/338d7508968c_vpnaas_peer_address_.py
+++ b/neutron/db/migration/alembic_migrations/versions/338d7508968c_vpnaas_peer_address_.py
@@ -44,7 +44,7 @@ def upgrade(active_plugins=None, options=None):
         return
 
     op.alter_column('ipsec_site_connections', 'peer_address',
-                    _type=sa.String(255), existing_type=sa.String(64))
+                    type_=sa.String(255), existing_type=sa.String(64))
 
 
 def downgrade(active_plugins=None, options=None):
@@ -52,4 +52,4 @@ def downgrade(active_plugins=None, options=None):
         return
 
     op.alter_column('ipsec_site_connections', 'peer_address',
-                    _type=sa.String(64), existing_type=sa.String(255))
+                    type_=sa.String(64), existing_type=sa.String(255))