diff --git a/website/agb/src/app/registry.tsx b/website/agb/src/app/registry.tsx
index 45552c80..e19526b5 100644
--- a/website/agb/src/app/registry.tsx
+++ b/website/agb/src/app/registry.tsx
@@ -29,7 +29,7 @@ export default function StyledComponentsRegistry({
 }
 
 const BodyWithPixelRatio = styled.body<{
-  $pixel?: number;
+  $pixel: number;
 }>`
   --device-pixel: calc(1px / ${(props) => props.$pixel});
 `;