diff --git a/.travis.yml b/.travis.yml
index 2b1b1b187b..71627635dd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,7 +13,7 @@ install:
 
 script:
   - python setup.py test
-  - flake8 viper/, tests/
+  - flake8 viper/ tests/
 
 after_success:
 - coveralls