diff --git a/doc/org-setup.inc b/doc/org-setup.inc
index 6ad09c9..60b9382 100644
--- a/doc/org-setup.inc
+++ b/doc/org-setup.inc
@@ -4,7 +4,7 @@
 
 #+LINK: sym file:snippet-reference.org::#%s
 
-#+OPTIONS: author:nil num:nil
+#+OPTIONS: author:nil num:nil timestamp:nil
 #+AUTHOR:
 # org < 8.0 use +STYLE, after use +HTML_HEAD
 #+STYLE: <link rel="stylesheet" type="text/css" href="stylesheets/manual.css" />