diff --git a/doc/bison.1 b/doc/bison.1
index 958bb398..471952d9 100644
--- a/doc/bison.1
+++ b/doc/bison.1
@@ -320,10 +320,6 @@ bison \-y $*
 .ft R
 .sp
 .RE
-.PP
-The long-named options can be introduced with `+' as well as `\-\-',
-for compatibility with previous releases.  Eventually support for `+'
-will be removed, because it is incompatible with the POSIX.2 standard.
 .SH FILES
 /usr/local/lib/bison.simple	simple parser
 .br