diff --git a/pytools/__init__.py b/pytools/__init__.py
index 5f5a8efd0ba79d27e436b64ab88d809de4c92aef..b372dd2f52770eceb73a4a138dca3e6493768f28 100644
--- a/pytools/__init__.py
+++ b/pytools/__init__.py
@@ -73,7 +73,10 @@ class Record(object):
     def copy(self, **kwargs):
         for f in self.__class__.fields:
             if f not in kwargs:
-                kwargs[f] = getattr(self, f)
+                try:
+                    kwargs[f] = getattr(self, f)
+                except AttributeError:
+                    pass
         return self.__class__(**kwargs)
 
     def __getstate__(self):