diff --git a/.travis.yml b/.travis.yml
index 23ea3e9..f88f8ad 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,7 @@ install:
   - pip install coveralls
 
 script:
+  - pep8 amodem/ scripts/ tests/ amodem-cli
   - cd tests
   - coverage run --source=amodem -m py.test