diff --git a/plugins/XmlMaterialProfile/tests/TestXmlMaterialProfile.py b/plugins/XmlMaterialProfile/tests/TestXmlMaterialProfile.py
index 9658328c8a..e794117946 100644
--- a/plugins/XmlMaterialProfile/tests/TestXmlMaterialProfile.py
+++ b/plugins/XmlMaterialProfile/tests/TestXmlMaterialProfile.py
@@ -62,4 +62,19 @@ def test_setDirty():
         material_1.setDirty(False)
 
     assert not material_1.isDirty()
-    assert material_2.isDirty()
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+    assert material_2.isDirty()
+
+
+def test_serializeNonBaseMaterial():
+    material_1 = createXmlMaterialProfile("herpderp")
+    material_1.getMetaData()["base_file"] = "omgzomg"
+
+    container_registry = MagicMock()
+    container_registry.isReadOnly = MagicMock(return_value=False)
+    container_registry.findContainers = MagicMock(return_value=[material_1])
+
+    with patch("UM.Settings.ContainerRegistry.ContainerRegistry.getInstance", MagicMock(return_value=container_registry)):
+        with pytest.raises(NotImplementedError):
+            # This material is not a base material, so it can't be serialized!
+            material_1.serialize()
+            
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