diff --git a/.travis.yml b/.travis.yml
index 63e9a2965..ae4a5b166 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,6 @@ compiler:
 before_script: 
   - ./configure_ubuntu_12.04.sh
 # for some tests  
-  - sudo locale-gen de_DE
+  - sudo locale-gen de_DE && sudo locale-gen zh_CN.utf8
   - HPHP_HOME=`pwd` make -j 8
 script: hphp/hhvm/hhvm hphp/test/run --arg --threads 2 quick zend slow