diff --git a/development/sourcenav/sourcenav.SlackBuild b/development/sourcenav/sourcenav.SlackBuild
index 49e3b5c3bf..2a450a3d9e 100644
--- a/development/sourcenav/sourcenav.SlackBuild
+++ b/development/sourcenav/sourcenav.SlackBuild
@@ -78,8 +78,8 @@ CXXFLAGS="$SLKCFLAGS" \
   --libdir=/usr/lib${LIBDIRSUFFIX} \
   --build=$ARCH-slackware-linux
 
-make
-make install DESTDIR=$PKG
+make -j1
+make -j1 install DESTDIR=$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