diff --git a/sbol3/identified.py b/sbol3/identified.py
index ea31451..63ee22a 100644
--- a/sbol3/identified.py
+++ b/sbol3/identified.py
@@ -6,6 +6,7 @@
 import rdflib
 
 from . import *
+from .utils import parse_class_name
 
 
 class Identified(SBOLObject):
@@ -86,7 +87,7 @@ def _update_identity(self, identity: str, display_id: str) -> None:
                     new_display_id = child.display_id
                 else:
                     # Generate a display id based on type and number
-                    type_name = child.type_uri[len(SBOL3_NS):]
+                    type_name = parse_class_name(child.type_uri)
                     counter_value = self.counter_value(type_name)
                     new_display_id = f'{type_name}{counter_value}'
                 new_identity = posixpath.join(self.identity, new_display_id)
diff --git a/test/test_varcomp.py b/test/test_varcomp.py
index 2714d52..a82fd3c 100644
--- a/test/test_varcomp.py
+++ b/test/test_varcomp.py
@@ -45,6 +45,27 @@ def test_round_trip1(self):
         vf2 = doc2.find(vf1.identity)
         self.assertIsInstance(vf2, sbol3.VariableFeature)
 
+    def test_round_trip2(self):
+        # See https://github.com/SynBioDex/pySBOL3/issues/159
+        sbol3.set_namespace('https://github.com/synbiodex/pysbol3')
+        doc1 = sbol3.Document()
+        comp1 = sbol3.Component('comp1', sbol3.SBO_DNA)
+        doc1.add(comp1)
+        cd1 = sbol3.CombinatorialDerivation('cd1', comp1)
+        self.assertEqual(comp1.identity, cd1.template)
+        doc1.add(cd1)
+        vf1 = sbol3.VariableFeature()
+        hour = 'https://identifiers.org/ncit:C25529'
+        m1 = sbol3.Measure(32, hour)
+        vf1.variant_measure.append(m1)
+        cd1.variable_features.append(vf1)
+        self.assertTrue(vf1.identity.startswith(cd1.identity))
+        # Ensure that Measure m1 is valid. The bug tested here was that it
+        # had been assigned an invalid displayId.
+        # Note: validate() currently returns None if an object is valid,
+        #       and raises an exception if the object is not valid.
+        self.assertIsNone(m1.validate())
+
 
 if __name__ == '__main__':
     unittest.main()