diff --git a/tools/travis_before_install.sh b/tools/travis_before_install.sh
index 0a892983..0a1d97ed 100755
--- a/tools/travis_before_install.sh
+++ b/tools/travis_before_install.sh
@@ -7,7 +7,6 @@ export COVERALLS_REPO_TOKEN=7LdFN9232ZbSY3oaXHbQIzLazrSf6w2pQ
 export PIP_DEFAULT_TIMEOUT=60
 sh -e /etc/init.d/xvfb start
 export DISPLAY=:99.0
-export PYTHONWARNINGS="module"
 export TEST_ARGS="--exe --ignore-files=^_test -v --with-doctest \
                   --ignore-files=^setup.py$"
 WHEELBINARIES="matplotlib numpy scipy pillow cython"