diff --git a/koans/about_string_manipulation.py b/koans/about_string_manipulation.py
index 5204f29ba..9009baf73 100644
--- a/koans/about_string_manipulation.py
+++ b/koans/about_string_manipulation.py
@@ -14,7 +14,7 @@ def test_use_format_to_interpolate_variables(self):
     def test_formatted_values_can_be_shown_in_any_order_or_be_repeated(self):
         value1 = 'doh'
         value2 = 'DOH'
-        string = "The values are {1}, {0}, {0} and {1}!".format(value1, value2)
+        string = "The values are {1}, {0}, {0} and, {1}!".format(value1, value2)
         self.assertEqual(__, string)
 
     def test_any_python_expression_may_be_interpolated(self):