diff --git a/.travis.yml b/.travis.yml
index c15cc6795..54c5901d0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ sudo: required
 dist: trusty
 
 env:
-- CFLAGS=-Werror
+- CFLAGS=-Wall -W -Werror
 
 os:
   - linux