diff --git a/.travis.yml b/.travis.yml
index 39dd067dc4..85656ba720 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -34,7 +34,7 @@ addons:
 
 install:
   - |
-    if [ $TRAVIS_PHP_VERSION != '5.6' && $TRAVIS_PHP_VERSION != hhvm* ]; then
+    if [ $TRAVIS_PHP_VERSION != '5.6' ] && [ $TRAVIS_PHP_VERSION != hhvm* ]; then
         # disable xdebug for performance reasons when code coverage is not needed
         phpenv config-rm xdebug.ini || echo "xdebug is not installed"
     fi