diff --git a/bin/mujin_webstackclientpy_applyconfig.py b/bin/mujin_webstackclientpy_applyconfig.py
index c3ca60c..83a6da4 100755
--- a/bin/mujin_webstackclientpy_applyconfig.py
+++ b/bin/mujin_webstackclientpy_applyconfig.py
@@ -98,7 +98,7 @@ def _CopyValueOfPath(src, dest, path, parentPath=None):
     currentPathElement = path[0]
     if currentPathElement == '*':
         if isinstance(src, dict) and isinstance(dest, dict):
-            for srcKey, srcValue in src.iteritems():
+            for srcKey, srcValue in six.iteritems(src):
                 if srcKey in dest:
                     _CopyValueOfPath(srcValue, dest[srcKey], path[1:], (parentPath or [])+[path[0]])
                 else: