diff --git a/backend/apps/ifc_validation/fixtures/pass_header_language.ifc b/backend/apps/ifc_validation/fixtures/pass_header_language.ifc
new file mode 100644
index 00000000..143cc3ba
--- /dev/null
+++ b/backend/apps/ifc_validation/fixtures/pass_header_language.ifc
@@ -0,0 +1,10 @@
+ISO-10303-21;
+HEADER;
+FILE_DESCRIPTION(('ViewDefinition [ReferenceView_V1.2]', 'ExchangeRequirement [Any]'),'2;1');
+FILE_NAME('pass_header_language.ifc','2025-02-13T15:58:45',('jdoe'),('Acme Inc.'),'ABC rel. 0.1.2','Autodesk - Revit 26.4.0.32 (ENU) - 26.4.0.32','IFC4 model');
+FILE_SCHEMA(('IFC4'));
+ENDSEC;
+DATA;
+#1=IFCPERSON($,$,'',$,$,$,$);
+ENDSEC;
+END-ISO-10303-21;
\ No newline at end of file
diff --git a/backend/apps/ifc_validation/tests/tests_header_validation_task.py b/backend/apps/ifc_validation/tests/tests_header_validation_task.py
index 82bf9b89..def6c9a2 100644
--- a/backend/apps/ifc_validation/tests/tests_header_validation_task.py
+++ b/backend/apps/ifc_validation/tests/tests_header_validation_task.py
@@ -231,4 +231,29 @@ def test_header_validation_task_correctly_parses_encoded_company_and_tool(self):
         self.assertIsNotNone(model)
         self.assertEquals('MyFAB Tool Ä Ä', model.produced_by.name)
         self.assertEquals('2026.3', model.produced_by.version)
-        self.assertEquals('Testä Inc.', model.produced_by.company.name)
\ No newline at end of file
+        self.assertEquals('Testä Inc.', model.produced_by.company.name)
+    def test_header_validation_task_splits_language_package(self):
+
+        # arrange
+        HeaderValidationTaskTestCase.set_user_context()
+        request = ValidationRequest.objects.create(
+            file_name='pass_header_language.ifc',
+            file='pass_header_language.ifc', 
+            size=1
+        )
+        request.mark_as_initiated()
+
+        # act
+        header_validation_subtask(
+            prev_result={'is_valid': True, 'reason': 'test'}, 
+            id=request.id, 
+            file_name=request.file_name
+        )
+
+        # assert
+        model = Model.objects.get(id=request.id)
+        self.assertIsNotNone(model)
+        self.assertEquals('Revit 26.4.0.32 (ENU)', model.produced_by.name)
+        self.assertEquals('26.4.0.32', model.produced_by.version)
+        self.assertEquals('Revit 26.4.0.32', model.produced_by.canonical_name)
+        self.assertEquals('en', model.produced_by.language_code)