diff --git a/.travis.yml b/.travis.yml
index 611c0ea..30f5601 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,5 +11,5 @@ matrix:
     - php: hhvm
 
 before_script:
-  - phpenv config-add tests/config.ini
+  - sh -c 'if [ "$TRAVIS_PHP_VERSION" != "hhvm" ]; then echo "session.serialize_handler = php" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini; fi;'
   - composer install --dev --prefer-source
diff --git a/tests/config.ini b/tests/config.ini
deleted file mode 100644
index be28dd1..0000000
--- a/tests/config.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-session.serialize_handler = php
-