diff --git a/Lib/test/test_optparse.py b/Lib/test/test_optparse.py
index 1b43f9ad2f3..183a9df1157 100644
--- a/Lib/test/test_optparse.py
+++ b/Lib/test/test_optparse.py
@@ -757,7 +757,7 @@ def test_option_consumes_optionlike_string(self):
     def test_combined_single_invalid_option(self):
         self.parser.add_option("-t", action="store_true")
         self.assertParseFail(["-test"],
-                          "no such option: -e")
+                             "no such option: -e")
 
 class TestBool(BaseTest):
     def setUp(self):