diff --git a/corepos/db/office_op/model.py b/corepos/db/office_op/model.py
index b61bdd3..5d60fc3 100644
--- a/corepos/db/office_op/model.py
+++ b/corepos/db/office_op/model.py
@@ -260,7 +260,8 @@ class TaxRateComponent(Base):
         sa.ForeignKeyConstraint(['taxRateID'], ['taxrates.id']),
     )
 
-    id = sa.Column(sa.Integer(), primary_key=True, autoincrement=True, nullable=False)
+    taxRateComponentID = sa.Column(sa.Integer(), primary_key=True, autoincrement=True, nullable=False)
+    id = orm.synonym('taxRateComponentID')
 
     tax_rate_id = sa.Column('taxRateID', sa.Integer())
     tax_rate = orm.relationship(TaxRate, backref='components')