diff --git a/src/ifcopenshell-python/ifcopenshell/api/project/append_asset.py b/src/ifcopenshell-python/ifcopenshell/api/project/append_asset.py
index edea2b586f..f825445428 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/project/append_asset.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/project/append_asset.py
@@ -258,6 +258,8 @@ class Usecase:
             return False
         elif element.is_a(self.target_class):
             return True
+        elif self.target_class == "IfcProduct" and element.is_a("IfcTypeProduct"):
+            return True
         return False
 
     def reuse_existing_contexts(self):
diff --git a/src/ifcopenshell-python/test/api/project/test_append_asset.py b/src/ifcopenshell-python/test/api/project/test_append_asset.py
index 9641cefb1e..290ed90399 100644
--- a/src/ifcopenshell-python/test/api/project/test_append_asset.py
+++ b/src/ifcopenshell-python/test/api/project/test_append_asset.py
@@ -302,6 +302,19 @@ class TestAppendAsset(test.bootstrap.IFC4):
         ifcopenshell.api.run("project.append_asset", self.file, library=library, element=element)
         assert ifcopenshell.util.element.get_material(self.file.by_type("IfcWall")[0]).Name == "Material"
 
+    def test_append_a_product_where_its_inverse_material_relationship_refers_to_product_types_not_in_scope(self):
+        library = ifcopenshell.api.run("project.create_file")
+        element = ifcopenshell.api.run("root.create_entity", library, ifc_class="IfcWall")
+        element_type = ifcopenshell.api.run("root.create_entity", library, ifc_class="IfcWallType")
+        element_type2 = ifcopenshell.api.run("root.create_entity", library, ifc_class="IfcWallType")
+        ifcopenshell.api.run("type.assign_type", library, related_object=element, relating_type=element_type)
+        material = ifcopenshell.api.run("material.add_material", library, name="Material")
+        ifcopenshell.api.run("material.assign_material", library, product=element, material=material)
+        ifcopenshell.api.run("material.assign_material", library, product=element_type, material=material)
+        ifcopenshell.api.run("material.assign_material", library, product=element_type2, material=material)
+        ifcopenshell.api.run("project.append_asset", self.file, library=library, element=element)
+        assert [e.GlobalId for e in self.file.by_type("IfcWallType")] == [element_type.GlobalId]
+
     def test_append_a_product_with_its_styles(self):
         library = ifcopenshell.api.run("project.create_file")
         element = ifcopenshell.api.run("root.create_entity", library, ifc_class="IfcWall")