diff --git a/.travis.yml b/.travis.yml
index 96a4609e..5adac37f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -44,8 +44,8 @@ addons:
       - python-commandnotfound
       - python3-commandnotfound
 before_install:
-  - if [[ $TRAVIS_OS_NAME == "osx" ]]; then rm /usr/local/include/c++ ; fi
-  - if [[ $TRAVIS_OS_NAME == "osx" ]]; then brew update ; fi
+  - if [[ $TRAVIS_OS_NAME == "osx" ]]; then rm -rf /usr/local/include/c++; fi
+  - if [[ $TRAVIS_OS_NAME == "osx" ]]; then brew update; fi
   - if [[ $TRAVIS_OS_NAME == "osx" ]]; then brew upgrade python; fi
   - if [[ $TRAVIS_OS_NAME == "osx" ]]; then pip3 install virtualenv; fi
   - if [[ $TRAVIS_OS_NAME == "osx" ]]; then virtualenv venv -p python3; fi