diff --git a/d/factor-lang/SlackBuild b/d/factor-lang/SlackBuild
index 06065e99..1543947f 100755
--- a/d/factor-lang/SlackBuild
+++ b/d/factor-lang/SlackBuild
@@ -7,7 +7,7 @@ PRGNAM=$(basename $CWD)
 ARCH=$(uname -m)
 GITHUB_REPO=factor/factor
 VERSION=${VERSION:-$(curl -s https://api.github.com/repos/${GITHUB_REPO}/releases/latest | grep tag_name | grep -o "[0-9.]*")}
-BUILD=1
+BUILD=${BUILD:-3}
 
 TAG=gwh
 OUTPUT=/tmp
@@ -25,6 +25,8 @@ rm -fr $PKG $TMP/$PRGNAM
 # mise en place
 cd $TMP
 [ ! -e $REPOSITORY ] && git clone https://github.com/${GITHUB_REPO}.git $REPOSITORY
+cd $REPOSITORY
+git pull --all
 
 [ -e $TMP/$PRGNAM ] && rm -fr $TMP/$PRGNAM
 cp -R $REPOSITORY $TMP/$PRGNAM
@@ -40,12 +42,13 @@ mkdir -p $PKG$PREFIX/libexec/$PRGNAM
 cp -a * $PKG$PREFIX/libexec/$PRGNAM
 
 mkdir -p $PKG$PREFIX/{bin,doc/$PRGNAM}
-cat <<EOF > $PKG$PREFIX/bin/$PRGNAM
+cat <<EOF > $PKG$PREFIX/bin/factor
 #!/bin/bash
 cd $PREFIX/libexec/$PRGNAM
-./$PRGNAM \$@
+./factor \$@
 EOF
-chmod +x $PKG$PREFIX/bin/$PRGNAM
+chmod +x $PKG$PREFIX/bin/factor
+
 ( cd $PKG$PREFIX/doc/$PRGNAM
     ln -s ../libexec/$PRGNAM/readme.html
     ln -s ../libexec/$PRGNAM/license.txt