diff --git a/webapp2.py b/webapp2.py
index 96dc905..d635da5 100755
--- a/webapp2.py
+++ b/webapp2.py
@@ -16,7 +16,10 @@
 import os
 import re
 import sys
-import threading
+try:
+    import threading
+except ImportError:
+    import dummy_threading as threading
 import urllib
 import urlparse
 from wsgiref import handlers