diff --git a/audio/qsynth/qsynth.SlackBuild b/audio/qsynth/qsynth.SlackBuild
index 0f70263d2e..38017a736f 100644
--- a/audio/qsynth/qsynth.SlackBuild
+++ b/audio/qsynth/qsynth.SlackBuild
@@ -44,10 +44,10 @@ tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
 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 \
- \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
- -exec chmod 644 {} \;
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -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 {} \;
 
 CFLAGS="$SLKCFLAGS" \
 CXXFLAGS="$SLKCFLAGS" \
@@ -60,8 +60,8 @@ CXXFLAGS="$SLKCFLAGS" \
   --docdir=/usr/doc/$PRGNAM-$VERSION \
   --build=$ARCH-slackware-linux
 
-make
-make install DESTDIR=$PKG
+make -j1
+make -j1 install DESTDIR=$PKG
 
 # remove empty man-page directory
 rm -rf $PKG/usr/share/man