diff --git a/office/LibreOffice/LibreOffice.SlackBuild b/office/LibreOffice/LibreOffice.SlackBuild
index 78e05c8d78..b5ba37a68c 100644
--- a/office/LibreOffice/LibreOffice.SlackBuild
+++ b/office/LibreOffice/LibreOffice.SlackBuild
@@ -28,7 +28,7 @@ PRGNAM=LibreOffice
 SRCNAM=libreoffice
 VERSION=${VERSION:-5.1.2.2}
 SHORT_VERSION=${VERSION%.*.*}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 PACKAGER=${PACKAGER:-"AnonymousCoward"}
 
@@ -162,6 +162,11 @@ make distro-pack-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
 
+# Prefer GTK2 toolkit
+cd $PKG/usr/lib$LIBDIRSUFFIX/$SRCNAM/program
+sed -i -e '/^#\ restore/i# Prefer GTK2\nexport SAL_USE_VCLPLUGIN=${SAL_USE_VCLPLUGIN:-gtk}\n' soffice
+cd -
+
 cd $PKG/usr/lib$LIBDIRSUFFIX
 mv $SRCNAM  $SRCNAM-$VERSION
 ln -s $SRCNAM-$VERSION $SRCNAM
diff --git a/office/LibreOffice/README b/office/LibreOffice/README
index 73881a5895..fc462491e7 100644
--- a/office/LibreOffice/README
+++ b/office/LibreOffice/README
@@ -18,3 +18,7 @@ Build time environment variables that may set to vary features are as follows.
    is always added to whatever LOLANGS is set. Thus building with, for example,
       LOLOANGS="de" sh LibreOffice
    would build LibreOffice with support for german and US english languages.
+
+For performance reasons, this Slackbuild sets GTK2 to be used at runtime.
+Alternatives (gen, gtk3, kde4) may still be used by setting SAL_USE_VCLPLUGIN
+in the user environment.