diff --git a/.travis.yml b/.travis.yml
index 030df2db..d25f50b7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,14 +1,12 @@
 sudo: false
+dist: trusty
 cache: pip
 
 addons:
-  sources:
-      - pov-wkhtmltopdf
   apt:
     packages:
       - expect-dev  # provides unbuffer utility
       - python-lxml # because pip installation is slow
-      - wkhtmltopdf # report tests
 
 language: python
 
@@ -19,6 +17,7 @@ env:
   global:
   - VERSION="9.0" TESTS="0" LINT_CHECK="0" TRANSIFEX="0"
   - TRANSIFEX_USER='transbot@odoo-community.org'
+  - WKHTMLTOPDF_VERSION=0.12.4
   - secure: NUsXwVrMntcqge1ozKW+DSkP7dq+Rla6JVvFF2c89/g+zJaIqQRi8EQBLoqNwCdMk+rjpQeZt/JPELjH+EzPcmGddhDxOgVB3nUT9LvFXGCHF+NjmHXqyba4tuc7BnpG1WDD+rSlxVCt1aIjNIhhaZ4ic0rCWpKNYu/yFTsmChc=
   matrix:
   - LINT_CHECK="1"
@@ -26,13 +25,6 @@ env:
   - TESTS="1" ODOO_REPO="odoo/odoo"
   - TESTS="1" ODOO_REPO="OCA/OCB"
 
-virtualenv:
-  system_site_packages: true
-
-before_install:
-  - "export DISPLAY=:99.0"
-  - "sh -e /etc/init.d/xvfb start"
-
 install:
   - git clone --depth=1 https://github.com/OCA/maintainer-quality-tools.git ${HOME}/maintainer-quality-tools
   - export PATH=${HOME}/maintainer-quality-tools/travis:${PATH}
diff --git a/report_qweb_pdf_watermark/tests/test_report_qweb_pdf_watermark.py b/report_qweb_pdf_watermark/tests/test_report_qweb_pdf_watermark.py
index 7525a95a..fbde1c26 100644
--- a/report_qweb_pdf_watermark/tests/test_report_qweb_pdf_watermark.py
+++ b/report_qweb_pdf_watermark/tests/test_report_qweb_pdf_watermark.py
@@ -1,11 +1,13 @@
 # -*- coding: utf-8 -*-
 # © 2016 Therp BV <http://therp.nl>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
-from openerp.tests.common import TransactionCase
+from PIL import Image
+from openerp.tests.common import HttpCase
 
 
-class TestReportQwebPdfWatermark(TransactionCase):
+class TestReportQwebPdfWatermark(HttpCase):
     def test_report_qweb_pdf_watermark(self):
+        Image.init()
         # with our image, we have three
         self._test_report_images(3)