diff --git a/tests/test_mfn.py b/tests/test_mfn.py
index cc880ba..703d062 100644
--- a/tests/test_mfn.py
+++ b/tests/test_mfn.py
@@ -7,8 +7,11 @@
 def test_fn_types():
     """Check that the Fn.Type enum is identical to the MFn.Type enum"""
 
+    # these types are only for backward compatibility and do not exist in Maya's Python 2.0 API
+    legacyTypes = {'kAttribute2Long', 'kAttribute3Long', 'kData2Long', 'kData3Long'}
+
     for k, v in maya.api.OpenMaya.MFn.__dict__.items():
-        if not k.startswith('k'):
+        if not k.startswith('k') or k in legacyTypes:
             continue
 
         assert hasattr(cmdc.Fn.Type, k), (