diff --git a/academic/chemtool/chemtool.SlackBuild b/academic/chemtool/chemtool.SlackBuild
index 66526a07e8..eb8d211e38 100644
--- a/academic/chemtool/chemtool.SlackBuild
+++ b/academic/chemtool/chemtool.SlackBuild
@@ -2,7 +2,7 @@
 
 # Slackware build script for chemtool
 
-# Copyright 2006,2008-2011  Robby Workman, Northport, Alabama, USA 
+# Copyright 2006,2008-2012  Robby Workman, Northport, Alabama, USA 
 # All rights reserved.
 #
 # Redistribution and use of this script, with or without modification, is
@@ -23,7 +23,7 @@
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 PRGNAM=chemtool
-VERSION=1.6.9
+VERSION=${VERSION:-1.6.13}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 
@@ -54,6 +54,8 @@ else
   LIBDIRSUFFIX=""
 fi
 
+set -e
+
 rm -rf $PKG 
 mkdir -p $TMP $PKG $OUTPUT
 cd $TMP
@@ -70,6 +72,7 @@ CXXFLAGS="$SLKCFLAGS" \
   --libdir=/usr/lib${LIBDIRSUFFIX} \
   --sysconfdir=/etc \
   --localstatedir=/var \
+  --mandir=/usr/man \
   --build=$ARCH-slackware-linux
 
 make
diff --git a/academic/chemtool/chemtool.info b/academic/chemtool/chemtool.info
index a71a3e8173..8e136f7881 100644
--- a/academic/chemtool/chemtool.info
+++ b/academic/chemtool/chemtool.info
@@ -1,10 +1,10 @@
 PRGNAM="chemtool"
-VERSION="1.6.9"
+VERSION="1.6.13"
 HOMEPAGE="http://ruby.chemie.uni-freiburg.de/~martin/chemtool"
-DOWNLOAD="http://ruby.chemie.uni-freiburg.de/~martin/chemtool/chemtool-1.6.9.tar.gz"
-MD5SUM="d13b16c019a9912cf0c3de07ca5bcd29"
+DOWNLOAD="http://ruby.chemie.uni-freiburg.de/~martin/chemtool/chemtool-1.6.13.tar.gz"
+MD5SUM="d263b8cf097134e36c5e929e7e77d668"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
 REQUIRES=""
 MAINTAINER="Robby Workman"
-EMAIL="rw@rlworkman.net"
+EMAIL="rworkman@slackbuilds.org"