diff --git a/Lib/test/test_epoll.py b/Lib/test/test_epoll.py
index 275e59834cc..083fd7f79d9 100644
--- a/Lib/test/test_epoll.py
+++ b/Lib/test/test_epoll.py
@@ -36,6 +36,7 @@
 except IOError as e:
     if e.errno == errno.ENOSYS:
         raise unittest.SkipTest("kernel doesn't support epoll()")
+    raise
 
 class TestEPoll(unittest.TestCase):