diff --git a/README.org b/README.org
index 5d9253e..20cda21 100644
--- a/README.org
+++ b/README.org
@@ -255,6 +255,7 @@ of [[info:emacs#Saving Customizations][saving customizations (info)]].
  tab-always-indent 'complete
  tab-width 8
  tool-bar-mode nil
+ tooltip-mode nil
  url-cookie-trusted-urls nil
  url-cookie-untrusted-urls '(".*")
  use-dialog-box nil