diff --git a/README.md b/README.md
index 2a6c31a5fd9..1349c69cda1 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ See https://help.github.com/articles/using-jekyll-with-pages#installing-jekyll
 ## Deploy to ASF svnpubsub infra (committers only)
  1. generate static website in `./_site`
     ```
-    bundle exec jekyll build --safe
+    JEKYLL_ENV=production bundle exec jekyll build
     ```
 
  2. checkout ASF repo
diff --git a/contribution/documentation.md b/contribution/documentation.md
index 0b9ec5b5f3a..db464fd80da 100644
--- a/contribution/documentation.md
+++ b/contribution/documentation.md
@@ -171,7 +171,7 @@ If you're going to create new pages, there are some spots you need to add the lo
 
     ```
     # go to /docs under Zeppelin source
-    bundle exec jekyll build --safe
+    JEKYLL_ENV=production bundle exec jekyll build
     ```
 
  2. checkout ASF repo