diff --git a/neutron/db/migration/alembic_migrations/versions/f9263d6df56_remove_dhcp_lease.py b/neutron/db/migration/alembic_migrations/versions/f9263d6df56_remove_dhcp_lease.py
index e6f38a9b3e..51b8d937e7 100644
--- a/neutron/db/migration/alembic_migrations/versions/f9263d6df56_remove_dhcp_lease.py
+++ b/neutron/db/migration/alembic_migrations/versions/f9263d6df56_remove_dhcp_lease.py
@@ -42,5 +42,5 @@ def upgrade(active_plugins=None, options=None):
 
 
 def downgrade(active_plugins=None, options=None):
-    op.add_column('ipallocations', sa.Column(u'expiration', sa.DATETIME(),
+    op.add_column('ipallocations', sa.Column(u'expiration', sa.DateTime(),
                   nullable=True))