diff --git a/modules/incoterm/purchase.py b/modules/incoterm/purchase.py
index e87f90fbea..77d9a4323c 100644
--- a/modules/incoterm/purchase.py
+++ b/modules/incoterm/purchase.py
@@ -32,7 +32,7 @@ class Purchase(IncotermAvailableMixin, metaclass=PoolMeta):
         super().check_for_quotation()
         if not self.incoterm and self._incoterm_required:
             for line in self.lines:
-                if line.product and line.product.type in {'goods', 'assets'}:
+                if line.movable:
                     raise PurchaseQuotationError(
                         gettext('incoterm'
                             '.msg_purchase_incoterm_required_for_quotation',
diff --git a/modules/incoterm/sale.py b/modules/incoterm/sale.py
index 96071230b5..2bd03d44f8 100644
--- a/modules/incoterm/sale.py
+++ b/modules/incoterm/sale.py
@@ -65,7 +65,7 @@ class Sale(IncotermAvailableMixin, metaclass=PoolMeta):
         super().check_for_quotation()
         if not self.incoterm and self._incoterm_required:
             for line in self.lines:
-                if line.product and line.product.type in {'goods', 'assets'}:
+                if line.movable:
                     raise SaleQuotationError(
                         gettext('incoterm'
                             '.msg_sale_incoterm_required_for_quotation',