diff -r 514cb18945aa Lib/email/charset.py
--- a/Lib/email/charset.py	Fri Jul 12 20:17:00 2013 -0400
+++ b/Lib/email/charset.py	Sat Jul 13 10:51:21 2013 +0800
@@ -194,7 +194,7 @@
                    header encoding.  Charset.SHORTEST is not allowed for
                    body_encoding.
 
-    output_charset: Some character sets must be converted before the can be
+    output_charset: Some character sets must be converted before they can be
                     used in email headers or bodies.  If the input_charset is
                     one of them, this attribute will contain the name of the
                     charset output will be converted to.  Otherwise, it will