diff --git a/academic/mathomatic/doinst.sh b/academic/mathomatic/doinst.sh
new file mode 100644
index 0000000000..5fb28930db
--- /dev/null
+++ b/academic/mathomatic/doinst.sh
@@ -0,0 +1,3 @@
+if [ -x /usr/bin/update-desktop-database ]; then
+  /usr/bin/update-desktop-database -q usr/share/applications >/dev/null 2>&1
+fi
diff --git a/academic/mathomatic/mathomatic.SlackBuild b/academic/mathomatic/mathomatic.SlackBuild
index 5b7a0425b1..2573c6a9f5 100644
--- a/academic/mathomatic/mathomatic.SlackBuild
+++ b/academic/mathomatic/mathomatic.SlackBuild
@@ -2,11 +2,30 @@
 
 # Slackware build script for mathomatic
 
-# Written by Dylan Armitage <d.armitage89@gmail.com>
-# This work is released into the public domain.
+# Copyright 2011  Matthew "mfillpot" Fillpot
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Originally written by Dylan Armitage <d.armitage89@gmail.com>
 
 PRGNAM=mathomatic
-VERSION=${VERSION:-15.3.3}
+VERSION=${VERSION:-15.6.3}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 
@@ -53,16 +72,16 @@ find . \
  -exec chmod 644 {} \;
 
 CFLAGS="$SLKCFLAGS" \
-make READLINE=1
+  make READLINE=1
 
 # We do want to make sure it works. This is math, afterall.
 make test
 
 make install \
-prefix=/usr \
-mandir=/usr/man \
-docdir=/usr/doc/$PRGNAM-$VERSION \
-DESTDIR=$PKG
+  prefix=/usr \
+  mandir=/usr/man \
+  mathdocdir=/usr/doc/$PRGNAM-$VERSION \
+  DESTDIR=$PKG
 
 find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
   | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
@@ -74,6 +93,7 @@ cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
 
 mkdir -p $PKG/install
 cat $CWD/slack-desc > $PKG/install/slack-desc
+cat $CWD/doinst.sh > $PKG/install/doinst.sh
 
 cd $PKG
 /sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
diff --git a/academic/mathomatic/mathomatic.info b/academic/mathomatic/mathomatic.info
index fa2de52ff6..3994dd5e84 100644
--- a/academic/mathomatic/mathomatic.info
+++ b/academic/mathomatic/mathomatic.info
@@ -1,10 +1,10 @@
 PRGNAM="mathomatic"
-VERSION="15.3.3"
+VERSION="15.6.3"
 HOMEPAGE="http://www.mathomatic.org"
-DOWNLOAD="http://www.mathomatic.org/archive/mathomatic-15.3.3.tar.bz2"
-MD5SUM="74a9dcf0ad73f642fca01ee4e9e1b624"
+DOWNLOAD="http://mathomatic.org/mathomatic-15.6.3.tar.bz2"
+MD5SUM="afe923c5164b2d8746ef8dc87b868ba0"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
-MAINTAINER="Dylan Armitage"
-EMAIL="d.armitage89@gmail.com"
-APPROVED="Erik Hanson"
+MAINTAINER="Matthew Fillpot"
+EMAIL="mfilpot@gmail.com"
+APPROVED="Erik Hanson,Niels Horn"