diff --git a/src/python/m5/params.py b/src/python/m5/params.py
index 776fbe22b7..b49f811d1f 100644
--- a/src/python/m5/params.py
+++ b/src/python/m5/params.py
@@ -1710,6 +1710,9 @@ class NullSimObject(object):
     def set_path(self, parent, name):
         pass
 
+    def set_parent(self, parent, name):
+        pass
+
     def __str__(self):
         return 'Null'