fix typo
diff --git a/Lib/unittest.py b/Lib/unittest.py
index 22f8a3d..46761dc 100644
--- a/Lib/unittest.py
+++ b/Lib/unittest.py
@@ -57,7 +57,7 @@
 ##############################################################################
 __all__ = ['TestResult', 'TestCase', 'TestSuite', 'ClassTestSuite',
            'TextTestRunner', 'TestLoader', 'FunctionTestCase', 'main',
-           'defaultTestLoader', 'SkipException', 'skip', 'skipIf', 'skipUnless',
+           'defaultTestLoader', 'SkipTest', 'skip', 'skipIf', 'skipUnless',
            'expectedFailure']
 
 # Expose obsolete functions for backwards compatibility