diff --git a/.travis.yml b/.travis.yml
index f4329e9..3af4797 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,6 @@ install:
   - pip install pytest flaky .
 script:
   - py.test -s -v --cov=convoys .
-  - sphinx-build -M html docs/ docs/_build/
+  - sphinx-build -M html docs/ docs/_build/ -W
 after_success:
   - coveralls
diff --git a/docs/conf.py b/docs/conf.py
index 0448b97..2703ebf 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -100,7 +100,7 @@
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+# html_static_path = ['_static']
 
 # Custom sidebar templates, must be a dictionary that maps document names
 # to template names.