diff --git a/src/doc/trpl/error-handling.md b/src/doc/trpl/error-handling.md
index f4a156ee921..e335d59b192 100644
--- a/src/doc/trpl/error-handling.md
+++ b/src/doc/trpl/error-handling.md
@@ -120,7 +120,7 @@ It would be better if we just showed the code for unwrapping because it is so
 simple, but to do that, we will first need to explore the `Option` and `Result`
 types. Both of these types have a method called `unwrap` defined on them.
 
-### The `Option` type
+## The `Option` type
 
 The `Option` type is [defined in the standard library][5]: