diff --git a/corepos/db/office_op/model.py b/corepos/db/office_op/model.py
index c7fa505..2e25c34 100644
--- a/corepos/db/office_op/model.py
+++ b/corepos/db/office_op/model.py
@@ -633,6 +633,7 @@ class ProductLikeCode(Base):
     """
     __tablename__ = 'upcLike'
     __table_args__ = (
+        sa.ForeignKeyConstraint(['upc'], ['products.upc']),
         sa.ForeignKeyConstraint(['likeCode'], ['likeCodes.likeCode']),
     )