#11555: update doc for 3.x change to as_string mangle_from default.
diff --git a/Lib/email/message.py b/Lib/email/message.py
index 9ef2363..d30f109 100644
--- a/Lib/email/message.py
+++ b/Lib/email/message.py
@@ -136,8 +136,7 @@
         header.
 
         This is a convenience method and may not generate the message exactly
-        as you intend because by default it mangles lines that begin with
-        "From ".  For more flexibility, use the flatten() method of a
+        as you intend.  For more flexibility, use the flatten() method of a
         Generator instance.
         """
         from email.generator import Generator