updated travis yml

Author: kokspflanze

.travis.yml

@@ -73,7 +73,7 @@ install:
   - if [[ $DEPS == 'lowest' ]]; then travis_retry composer update --prefer-lowest --prefer-stable $COMPOSER_ARGS ; fi
   - if [[ $TEST_COVERAGE == 'true' ]]; then travis_retry composer require --dev $COMPOSER_ARGS satooshi/php-coveralls:^1.0 ; fi
   - travis_retry composer install $COMPOSER_ARGS
-  - if [[ $TRAVIS_PHP_VERSION =~ ^5.6 ]; then travis_retry composer install $COMPOSER_ARGS --with-dependencies $LEGACY_DEPS ; fi
+  - if [[ $TRAVIS_PHP_VERSION =~ ^5.6 ]]; then travis_retry composer install $COMPOSER_ARGS --with-dependencies $LEGACY_DEPS ; fi
   - composer show --installed
 
 script: