diff --git a/github-clinic/betty.md b/github-clinic/betty.md
index bba8942..5b48204 100644
--- a/github-clinic/betty.md
+++ b/github-clinic/betty.md
@@ -21,7 +21,7 @@ This file is written in Markdown, which formats text on the web. To see the Mark
 We can make words **bold** or *italic*.
 
 ### We can make headers.
-####I shall more headers
+###I shall more headers
 
 We can make lists – *note that lists need an empty line before list items!*