diff --git a/tests/testlib.py b/tests/testlib.py
index 2f3c2b2e..1406bf2d 100644
--- a/tests/testlib.py
+++ b/tests/testlib.py
@@ -20,7 +20,7 @@ import mitogen.utils
 try:
     import faulthandler
 except ImportError:
-    pass
+    faulthandler = None
 
 try:
     import urlparse