diff --git a/ChangeLog.txt b/ChangeLog.txt
index 12a8e571..ded2f497 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -2,6 +2,7 @@
 Added:
 - Quit option in new-config command
 Updated:
+- Installation bash script
 - Messages and references messages
 - Image types for graph 
 Fixed:
diff --git a/install.sh b/install.sh
index 1c0eb27e..0bcd50ff 100755
--- a/install.sh
+++ b/install.sh
@@ -29,23 +29,18 @@ cat slpkg/__metadata__.py | grep "__version_info__ = (" \
 
 PRGNAM=slpkg
 VERSION=${VERSION:-$(__version)} 
-TAG=${TAG:-_dsw}
 
 # Installation script.
 # With this script allows you to install the slpkg as a Slackware package binary file.
 # Support wget download.
-
 ARCHIVES="$PRGNAM-$VERSION.tar.gz $PRGNAM-$VERSION.zip v$VERSION.tar.gz v$VERSION.zip"
 cd ..
 for file in $ARCHIVES; do
-    if [ -f $file ]; then
-        cp $file $PRGNAM-$VERSION/slackbuild
-        cd $PRGNAM-$VERSION/slackbuild
-        chmod +x $PRGNAM.SlackBuild
-        ./$PRGNAM.SlackBuild
-        rm $file
-    fi
+  if [ -f $file ]; then
+    cp $file $PRGNAM-$VERSION/slackbuild
+    cd $PRGNAM-$VERSION/slackbuild
+    chmod +x $PRGNAM.SlackBuild
+    ./$PRGNAM.SlackBuild
+    rm $file
+  fi
 done 
-
-# install or upgrade with new version
-upgradepkg --install-new /tmp/$PRGNAM-$VERSION-*$TAG.t?z
diff --git a/slackbuild/slpkg.SlackBuild b/slackbuild/slpkg.SlackBuild
index 914a89bd..b7762e88 100755
--- a/slackbuild/slpkg.SlackBuild
+++ b/slackbuild/slpkg.SlackBuild
@@ -32,6 +32,7 @@ PRGNAM=slpkg
 VERSION=${VERSION:-$(__version)} 
 BUILD=${BUILD:-1}
 TAG=${TAG:-_dsw}
+INSTALL="upgradepkg --install-new"
 
 if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
@@ -121,3 +122,5 @@ cat $CWD/doinst.sh > $PKG/install/doinst.sh
 
 cd $PKG
 /sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-txz}
+
+$INSTALL $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.txz