diff --git a/doc/01-usage.md b/doc/01-usage.md
index 756126e..09b27b9 100644
--- a/doc/01-usage.md
+++ b/doc/01-usage.md
@@ -218,7 +218,7 @@ $ image-builder manifest --arch aarch64 minimal-raw
 # ... output ...
 ```
 
-# Blueprints
+## Blueprints
 
 Images can be customized with [blueprints](https://osbuild.org/docs/user-guide/blueprint-reference). For example we could build the `qcow2` we built above with some customizations applied.