diff --git a/wafo/powerpoint.py b/wafo/powerpoint.py
index cc742c1..ffa151a 100644
--- a/wafo/powerpoint.py
+++ b/wafo/powerpoint.py
@@ -31,6 +31,7 @@ Created on 15. des. 2009
 #                        typelib_mso.lcid,
 #                              int(typelib_mso.major), int(typelib_mso.minor))
 from __future__ import absolute_import
+from six import iteritems  # @UnresolvedImport
 import os
 import warnings
 import win32com.client
@@ -172,7 +173,7 @@ class Powerpoint(object):
     def _add_text_from_dict(self, page, id, txt_dict,  # @ReservedAssignment
                             level, maxlevel=None):
         if maxlevel is None or level <= maxlevel:
-            for name, subdict in txt_dict.iteritems():
+            for name, subdict in iteritems(txt_dict):
                 tr = page.Shapes(id).TextFrame.TextRange.InsertAfter(name)
                 unused_temp = page.Shapes(
                     id).TextFrame.TextRange.InsertAfter('\r')
diff --git a/wafo/tests/test_misc.py b/wafo/tests/test_misc.py
index c595f4d..6f5e6f2 100644
--- a/wafo/tests/test_misc.py
+++ b/wafo/tests/test_misc.py
@@ -1,4 +1,4 @@
-
+from six import iteritems
 from numpy.testing import (run_module_suite, assert_equal, assert_almost_equal,
                            assert_array_equal, assert_array_almost_equal,
                            TestCase, assert_,  assert_raises,)
@@ -372,7 +372,7 @@ def test_getshipchar():
                    service_speed=10,
                    service_speedSTD=0)
 
-    for name, val in true_sc.iteritems():
+    for name, val in iteritems(true_sc):
         assert_almost_equal(val, sc[name])