diff --git a/.travis.yml b/.travis.yml
index 0d8d1b7051..9e2181af6f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,5 +14,6 @@ before_script:
 script:
   - ./scripts/generate-mo --quiet
   - ant phpunit lint
+  - if [[ $TRAVIS_PULL_REQUEST != "false" ]] ; then ./scripts/check-dco $TRAVIS_COMMIT_RANGE ; fi
 after_script:
   - php vendor/bin/coveralls -v