diff --git a/.travis.yml b/.travis.yml
index bcb38fb47..3dcd98803 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -50,8 +50,8 @@ matrix:
           install:
             - export BOOST_DIR=$HOME/boost_1_63_0
             - export SLIC3R_STATIC=1
-            - export CXX=g++-7
-            - export CC=g++-7
+            - export CXX=g++-4.9
+            - export CC=g++-4.9
             - source $HOME/perl5/perlbrew/etc/bashrc
           after_success:
             - eval $(perl -Mlocal::lib=$TRAVIS_BUILD_DIR/local-lib)