diff --git a/test/app-tap/httpd.py b/test/app-tap/httpd.py
index b57ef1e397eba29b56a89180c3d6ec6f1686c8fd..a2dee1b837b837db60f44bdfb59f4a346d06f1ac 100755
--- a/test/app-tap/httpd.py
+++ b/test/app-tap/httpd.py
@@ -66,7 +66,7 @@ def read_handle(env, response):
     body = ["Not Found"]
     if env["PATH_INFO"] in paths:
         code, body, headers = paths[env["PATH_INFO"]]()
-    for key,value in env.iteritems():
+    for key,value in iter(env.items()):
         if "HTTP_" in key:
             headers.append((key[5:].lower(), value))
     response(code, headers)