diff --git a/zmq/_zmq.py b/zmq/_zmq.py
index 4817cd7..bbf88e9 100755
--- a/zmq/_zmq.py
+++ b/zmq/_zmq.py
@@ -26,6 +26,11 @@
 
 import random
 
+# hack to avoid twisted tests failure
+import py
+import pytest
+#
+
 from ctypes import *
 from ctypes_configure import configure