diff --git a/direct/src/distributed/DoInterestManager.py b/direct/src/distributed/DoInterestManager.py
index 1d0fd0b0b7..9cd3b6a922 100755
--- a/direct/src/distributed/DoInterestManager.py
+++ b/direct/src/distributed/DoInterestManager.py
@@ -163,7 +163,7 @@ class DoInterestManager(DirectObject.DirectObject):
         if isinstance(zoneIdList, types.ListType):
             vzl = list(zoneIdList)
             vzl.sort()
-            PythonUtil.uniqueElements(vzl)
+            uniqueElements(vzl)
             for zone in vzl:
                 datagram.addUint32(zone)
         else: