diff --git a/.travis.yml b/.travis.yml
index 3ad04c83..da481433 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,7 +15,7 @@ matrix:
     - compiler: clang
       dist: trusty
       env: CONFIG="--without-python"
-           CFLAGS="-O2 -g -fno-omit-frame-pointer -fsanitize=address,undefined -fno-sanitize=float-divide-by-zero -fno-sanitize-recover=all -Werror -Wno-error=unused-function -Wno-error=cast-align"
+           CFLAGS="-O2 -g -fno-omit-frame-pointer -fsanitize=address,undefined -fno-sanitize=float-divide-by-zero,pointer-overflow -fno-sanitize-recover=all -Werror -Wno-error=unused-function -Wno-error=cast-align"
            UBSAN_OPTIONS=print_stacktrace=1
 script: sh autogen.sh $CONFIG && make -j2 V=1 && make check
 git: