diff --git a/.travis.yml b/.travis.yml
index 906fa4e..960c60e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ before_install:
  - sudo apt-get remove -y --force-yes --purge golang-stable || true
  - sudo apt-get remove -y --force-yes --purge golang-weekly || true
  - sudo apt-get remove -y --force-yes --purge golang-tip || true
+ - [[ ! -x "$(which go)" ]] || (echo "Go is still present: $(which go)" ; exit 1)
 
 install:
  - hg clone -u release https://code.google.com/p/go "${HOME}/go" >/dev/null 2>&1