diff --git a/docs/2.guide/2.directory-structure/3.app-config.md b/docs/2.guide/2.directory-structure/3.app-config.md
index b2e9dba7f389..9ebc1054a333 100644
--- a/docs/2.guide/2.directory-structure/3.app-config.md
+++ b/docs/2.guide/2.directory-structure/3.app-config.md
@@ -41,6 +41,8 @@ console.log(appConfig.theme)
 </script>
 ```
 
+When configuring a custom [`srcDir`](/docs/api/nuxt-config#srcdir), make sure to place the `app.config` file at the root of the new `srcDir` path.
+
 ## Typing App Config
 
 Nuxt tries to automatically generate a TypeScript interface from provided app config so you won't have to type it yourself.