diff --git a/.travis.yml b/.travis.yml
index ff99dc9..a28de5d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,4 +16,5 @@ script:
   - composer run-script test -- -c phpunit.xml.dist
   - touch $TRAVIS_BUILD_DIR/tmp.php
   - export CHANGED_FILES=$(git diff --name-only --diff-filter=AM $TRAVIS_BRANCH...HEAD | tr '\n' ' ')
+  - echo $CHANGED_FILES
   - composer run-script phpcs $TRAVIS_BUILD_DIR/tmp.php $(echo $CHANGED_FILES) -- -n