diff --git a/docs/workflow-dispatch.md b/docs/workflow-dispatch.md
index 5c3ee71..e56a01f 100644
--- a/docs/workflow-dispatch.md
+++ b/docs/workflow-dispatch.md
@@ -91,7 +91,7 @@ The simplest response is to add a :tada: reaction to the comment.
           reaction-type: hooray
 ```
 
-### Validation errors
+## Validation errors
 
 When creating the [workflow_dispatch](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#workflow_dispatch) event, the GitHub API will return validation errors. In the following cases the action will issue a warning (visible in the Actions log), and set the action output `error-message`.