diff --git a/ui/dialog.tsx b/ui/dialog.tsx
index 70d115e7..c7122dfa 100644
--- a/ui/dialog.tsx
+++ b/ui/dialog.tsx
@@ -12,7 +12,7 @@ const DialogPortal = ({
   className,
   children,
   ...props
-}: Primitive.DialogPortalProps) => (
+}: Primitive.DialogPortalProps & { className?: string }) => (
   <Primitive.Portal {...props}>
     <div
       className={cn(