diff --git a/system/firejail/firejail.SlackBuild b/system/firejail/firejail.SlackBuild
index 51d3e8a987..57d7f88b16 100644
--- a/system/firejail/firejail.SlackBuild
+++ b/system/firejail/firejail.SlackBuild
@@ -23,11 +23,14 @@
 #  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 #  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+# 20220402 bkw: Modified by SlackBuilds.org, BUILD=2:
+# - add SlackBuild to doc dir.
+
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=firejail
 VERSION=${VERSION:-0.9.68}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
 
@@ -39,9 +42,6 @@ if [ -z "$ARCH" ]; then
   esac
 fi
 
-# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
-# the name of the created package would be, and then exit. This information
-# could be useful to other scripts.
 if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
   echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
   exit 0
@@ -76,9 +76,9 @@ cd $PRGNAM-$VERSION
 chown -R root:root .
 find -L . \
  \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
-  -o -perm 511 \) -exec chmod 755 {} \; -o \
+  -o -perm 511 \) -exec chmod 755 {} \+ -o \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
-  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \+
 
 CFLAGS="$SLKCFLAGS" \
 CXXFLAGS="$SLKCFLAGS" \
@@ -93,10 +93,9 @@ CXXFLAGS="$SLKCFLAGS" \
 
 sed -i "s|lib/firejail|lib${LIBDIRSUFFIX=}/firejail|" Makefile
 make
-make install DESTDIR=$PKG
+make install-strip DESTDIR=$PKG
 
-find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
-  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
 
 sed -i "s|whitelist /usr/share/doc|#whitelist /usr/share/doc|" $PKG/etc/firejail/firefox.profile