diff --git a/docs/yap.tex b/docs/yap.tex
index caacd4aa1..f352bcbf4 100644
--- a/docs/yap.tex
+++ b/docs/yap.tex
@@ -8,7 +8,7 @@
 @c @setchapternewpage odd
 @c %**end of header
 
-@set VERSION: 5.1.0
+@set VERSION: 5.0.1
 @set EDITION 4.2.4
 @set UPDATED December 2004
 
@@ -367,14 +367,14 @@ MA". Other references should include the classical @cite{Programming in
 Prolog}, by W.F. Clocksin and C.S. Mellish, published by
 Springer-Verlag.
 
-YAP 4.3 is known to build with many versions of gcc (<= gcc-2.7.2, >=
+YAP is known to build with many versions of gcc (<= gcc-2.7.2, >=
 gcc-2.8.1, >= egcs-1.0.1, gcc-2.95.*) and on a variety of Unixen:
 SunOS 4.1, Solaris 2.*, Irix 5.2, HP-UX 10, Dec Alpha Unix, Linux 1.2
 and Linux 2.* (RedHat 4.0 thru 5.2, Debian 2.*) in both the x86 and
-alpha platforms. It has been built on Windows NT 4.0 using Cygwin from
-Cygnus Solutions (see README.nt) and using Visual C++ 6.0.
+alpha platforms. It has been built on Windows using Cygwin from
+Cygnus Solutions (see README.nt).
 
-The overall copyright and permission notice for YAP4.3 can be found in
+The overall copyright and permission notice for YAP can be found in
 the Artistic file in this directory. YAP follows the Perl Artistic
 license, and it is thus non-copylefted freeware.