diff --git a/system/hfsprogs/hfsprogs.SlackBuild b/system/hfsprogs/hfsprogs.SlackBuild
index c7dec2e090..394bc24351 100644
--- a/system/hfsprogs/hfsprogs.SlackBuild
+++ b/system/hfsprogs/hfsprogs.SlackBuild
@@ -22,6 +22,8 @@
 #  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 #  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+# 20220211 bkw: Modified by SlackBuilds.org: fix build on 15.0.
+
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=hfsprogs
@@ -39,9 +41,6 @@ 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
@@ -76,15 +75,18 @@ cd $SRCNAM-$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 {} \+
 
 # patches mostly from Debian
 for patch in $CWD/patches/*.patch; do
   patch -p1 < $patch
 done
 
+# 20220211 bkw: this header no longer exists.
+sed -i '/#include.*sys\/sysctl\.h/d' */*.c
+
 CFLAGS="$SLKCFLAGS" \
 CXXFLAGS="$SLKCFLAGS" \
 make -f Makefile.lnx