diff --git a/.travis.yml b/.travis.yml
index 808707df7f..956a5876c3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,6 +15,7 @@ before_script:
   - bower install
   - composer self-update
   - composer install --dev --prefer-source
+  - bin/setup less:compile
   - sudo apt-get update
   - sudo apt-get install -y -qq xpdf ffmpeg libavcodec-extra-53 openoffice.org-writer unoconv ghostscript gsfonts dcraw ufraw graphicsmagick libgraphicsmagick1-dev libfreetype6-dev libjpeg-dev libgif-dev libtiff-dev libdjvulibre-dev libwmf-dev libmagickcore-dev libmagickwand-dev libpng-dev gettext zlib1g-dev build-essential libfaac-dev libmp3lame0 libx264-dev libvpx-dev libtheora-dev libvorbis-dev gpac
   - sudo apt-get clean