diff --git a/.travis.yml b/.travis.yml
index 3dbd6b8..809fdca 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -53,6 +53,7 @@ _linux-s390x: &linux-s390x
     - export PATH=$OPENRESTY_PREFIX/bin:$OPENRESTY_PREFIX/nginx/sbin:$PATH
     - nginx -V
     - ldd `which nginx`|grep -E 'luajit|ssl|pcre'
+    - prove -I. -r t/
 
 _linux-ppc64le: &linux-ppc64le
   os: linux