diff --git a/.travis.yml b/.travis.yml
index 896b7a78633d431744705bcf6db3918390175c9a..dfc1aef899a5e2ce449988ef9b6f583d0f9cc7d6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,9 @@ language: c
 sudo: required
 dist: trusty
 
+env:
+- CFLAGS=-Wno-absolute-value -Werror
+
 compiler:
   - gcc
   - clang