diff --git a/.travis.yml b/.travis.yml
index e30f058..40c4a24 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ install:
 before_script:
     - ./bootstrap.sh
 script:
-    - ./configure ${CONFIGURE_OPT} && make && make check-TESTS
+    - ./configure ${CONFIGURE_OPT} CFLAGS="-Werror" && make && make check
 env:
     - CONFIGURE_OPT="--without-libxml2"
     - CONFIGURE_OPT="--with-libxml2"