diff --git a/system/sunflower/sunflower.SlackBuild b/system/sunflower/sunflower.SlackBuild
index e12ecbfb12..3368022b3b 100644
--- a/system/sunflower/sunflower.SlackBuild
+++ b/system/sunflower/sunflower.SlackBuild
@@ -21,11 +21,15 @@
 # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+# 20220312 bkw: Modified by SlackBuilds.org: VERSION must be constant,
+# and match VERSION in the .info file. Also, do not install useless
+# INSTALL in documentation directory.
+
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=sunflower
-SRCVER=${SRCVER:-0.5-63}
-VERSION=${VERSION:-$(echo $SRCVER | sed 's/-/\./g')}
+VERSION=${VERSION:-0.5_63}
+SRCVER="$( echo $VERSION | tr _ - )"
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
@@ -38,9 +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
@@ -75,9 +76,9 @@ cd Sunflower
 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 {} \+
 
 python3 setup.py install --root=$PKG
 
@@ -96,7 +97,7 @@ find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | gr
   | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
 
 mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
-cp AUTHORS CHANGES COPYING INSTALL LICENSE README.md $PKG/usr/doc/$PRGNAM-$VERSION
+cp AUTHORS CHANGES COPYING LICENSE README.md $PKG/usr/doc/$PRGNAM-$VERSION
 cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
 
 mkdir -p $PKG/install
diff --git a/system/sunflower/sunflower.info b/system/sunflower/sunflower.info
index 95f0dfc489..8433c9d41a 100644
--- a/system/sunflower/sunflower.info
+++ b/system/sunflower/sunflower.info
@@ -1,5 +1,5 @@
 PRGNAM="sunflower"
-VERSION="0.5.63"
+VERSION="0.5_63"
 HOMEPAGE="https://sunflower-fm.org"
 DOWNLOAD="https://sunflower-fm.org/pub/sunflower-0.5-63.tgz"
 MD5SUM="33c0bba1ccaf256838f5be12ddad5e7f"