diff --git a/os_ken/tests/integrated/test_of_config.py b/os_ken/tests/integrated/test_of_config.py
index 70a4a342..e39d7c90 100644
--- a/os_ken/tests/integrated/test_of_config.py
+++ b/os_ken/tests/integrated/test_of_config.py
@@ -235,7 +235,7 @@ class OFConfigClient(app_manager.OSKenApp):
         self._validate(tree)
 
         name_spaces = set()
-        for e in tree.getiterator():
+        for e in tree.iter():
             name_spaces.add(capable_switch.get_ns_tag(e.tag)[0])
         print(name_spaces)