diff --git a/pyneuroml/utils/components.py b/pyneuroml/utils/components.py
index ff233be5..a6f9d51a 100644
--- a/pyneuroml/utils/components.py
+++ b/pyneuroml/utils/components.py
@@ -19,7 +19,6 @@
 
 
 def add_new_component(
-    nmldoc: NeuroMLDocument,
     component_id: str,
     component_type: str,
     component_filename: Optional[str] = None,
@@ -52,8 +51,8 @@ def add_new_component(
         the component in
     :type component_filename: str
     :param **kwargs: parameters to pass to the Component
-    :returns: the Component Object
-    :rtype: Component
+    :returns: the Component Object, and the name of the XML file it was serialised in
+    :rtype: tuple(Component, str)
     """
     newmodel = Model()
     newcomp = Component(id_=component_id, type_=component_type, **kwargs)
@@ -70,6 +69,8 @@ def add_new_component(
     logger.info(
         "Component file included in NeuroML document. Note that new components will not validate against the NeuroML schema."
     )
-    nmldoc.add(IncludeType, href=component_filename)
+    logger.info(
+        f"Please also remember to include {component_filename} in the LEMS simulation file"
+    )
 
-    return newcomp
+    return newcomp, component_filename
diff --git a/tests/utils/test_utils.py b/tests/utils/test_utils.py
index ca933b02..ecb255d5 100644
--- a/tests/utils/test_utils.py
+++ b/tests/utils/test_utils.py
@@ -287,11 +287,9 @@ def test_translate_cell_to_coords(self):
 
     def test_adding_new_components(self):
         """Test add_new_component method."""
-        newdoc = neuroml.utils.component_factory("NeuroMLDocument", id="test_doc")  # type: neuroml.NeuroMLDocument
-        new_comp = add_new_component(
-            newdoc, "newcomp", "sometype", param1="5v", param2="something"
+        new_comp, new_comp_file = add_new_component(
+            "newcomp", "sometype", param1="5v", param2="something"
         )
         self.assertIsNotNone(new_comp)
-        self.assertEqual(1, len(newdoc.includes))
-        self.assertIsFile("component_newcomp.xml")
-        os.unlink("component_newcomp.xml")
+        self.assertIsFile(new_comp_file)
+        os.unlink(new_comp_file)