diff --git a/site/_docs/posts.md b/site/_docs/posts.md
index 61547fbb..ee02d06b 100644
--- a/site/_docs/posts.md
+++ b/site/_docs/posts.md
@@ -180,6 +180,9 @@ Excerpt
 Out-of-excerpt
 {% endhighlight %}
 
+You can also set the `excerpt_separator` globally in your `_config.yml`
+configuration file.
+
 Completely disable excerpts by setting your `excerpt_separator` to `""`.
 
 Also, as with any output generated by Liquid tags, you can pass the