diff --git a/.travis.yml b/.travis.yml
index dc2cefdcb..f399c1de8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,7 +7,6 @@ install:
 - export SLIC3R_STATIC=1
 - export CXX=g++-4.9
 - export CC=g++-4.9
-- export WXDIR=$HOME/wx302
 - source $HOME/perl5/perlbrew/etc/bashrc
 script:
 - bash package/linux/travis-setup.sh
@@ -32,6 +31,8 @@ addons:
     packages:
     - g++-4.9
     - gcc-4.9
+    - libgtk2.0-0 
+    - libgtk2.0-dev
   ssh_known_hosts: dl.slic3r.org
 notifications:
   irc: