diff --git a/contrib/ast-db-manage/config/versions/81b01a191a46_pjsip_add_contact_reg_server.py b/contrib/ast-db-manage/config/versions/81b01a191a46_pjsip_add_contact_reg_server.py
index c25fc72335..0318b9a4fc 100644
--- a/contrib/ast-db-manage/config/versions/81b01a191a46_pjsip_add_contact_reg_server.py
+++ b/contrib/ast-db-manage/config/versions/81b01a191a46_pjsip_add_contact_reg_server.py
@@ -16,7 +16,7 @@ import sqlalchemy as sa
 
 def upgrade():
     op.add_column('ps_contacts', sa.Column('reg_server', sa.String(20)))
-    op.drop_constraint(UniqueConstraint('id'), 'ps_contacts', type_='unique')
+    op.drop_constraint('id', 'ps_contacts', type_='unique')
     op.create_unique_constraint('ps_contacts_uq', 'ps_contacts', ['id','reg_server'])
 
 def downgrade():