diff --git a/.travis.yml b/.travis.yml
index 85e7fdfd..dd90c336 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,7 +29,7 @@ install:
 script:
    - cd smarty-phpunit
    - if [[ $TRAVIS_PHP_VERSION = 7.1 || $TRAVIS_PHP_VERSION = nightly ]]; then
-        /vendor/bin/phpunit ./;
+        $COMPOSER_BIN_DIR/phpunit ./;
     else
         phpunit ./;
     fi