diff --git a/docs/frontend-system/architecture/05-extension-overrides.md b/docs/frontend-system/architecture/05-extension-overrides.md
index 20476c24b0..2bceab52d9 100644
--- a/docs/frontend-system/architecture/05-extension-overrides.md
+++ b/docs/frontend-system/architecture/05-extension-overrides.md
@@ -42,7 +42,7 @@ const apertureDarkTheme = createThemeApi({ … });
 
 // Creating an extension overrides preset
 export createExtensionOverrides({
-  Extensions: [apertureLightTheme, apertureDarkTheme]
+  extensions: [apertureLightTheme, apertureDarkTheme]
 });
 
 // plugins/aperture-overrides/src/index.ts