diff --git a/purchase.py b/purchase.py
index a974940fd9..93056f8c61 100644
--- a/purchase.py
+++ b/purchase.py
@@ -1164,6 +1164,7 @@ class PurchaseLine(ModelSQL, ModelView):
         invoice_line.product = self.product
         invoice_line.unit_price = self.unit_price
         invoice_line.taxes = self.taxes
+        invoice_line.invoice_type = invoice_type
         if self.product:
             invoice_line.account = self.product.account_expense_used
             if not invoice_line.account: