diff --git a/.travis.yml b/.travis.yml
index 0f17a5a..d41a8fd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,6 @@ compiler:
   - clang
 env:
   - CFLAGS=-O2 CXXFLAGS=-O2
-  - CFLAGS="-O2 -Wall -Wextra -Werror" CXXFLAGS="-O2 -Wall -Wextra -Werror"
+  - CFLAGS="-O2 -pedantic -Wall -Wextra -Werror" CXXFLAGS="-O2 -pedantic -Wall -Wextra -Werror"
   - CFLAGS=-O3 CXXFLAGS=-O3
 script: autoreconf -f -i && ./configure && make