diff --git a/apps/web/src/components/chat/ComposerBanner.tsx b/apps/web/src/components/chat/ComposerBanner.tsx
index 78753c36097b080417fed234ca082da86dc617a9..cbcb588971570bd45dded7c6156a57e643bece7c 100644
--- a/apps/web/src/components/chat/ComposerBanner.tsx
+++ b/apps/web/src/components/chat/ComposerBanner.tsx
@@ -111,7 +111,7 @@ function Attachment({ className, ...props }: ComponentProps<"div">) {
         "mx-auto -mb-[calc(1rem+1px)] w-[calc(100%-2*var(--chat-composer-drawer-inset))]",
         // Adjacent attachments share their outline, including notices outside the form.
         "[&+[data-slot=composer-banner-attachment]_[data-composer-banner-surface=attached]]:before:rounded-none [&+[data-slot=composer-banner-attachment]_[data-composer-banner-surface=attached]]:before:border-t-0",
-        "[&+:has([data-chat-composer-form])_[data-chat-composer-form]>[data-slot=composer-banner-attachment]:first-child_[data-composer-banner-surface=attached]]:before:rounded-none [&+:has([data-chat-composer-form])_[data-chat-composer-form]>[data-slot=composer-banner-attachment]:first-child_[data-composer-banner-surface=attached]]:before:border-t-0",
+        "[&+*_[data-chat-composer-form]>[data-slot=composer-banner-attachment]:first-child_[data-composer-banner-surface=attached]]:before:rounded-none [&+*_[data-chat-composer-form]>[data-slot=composer-banner-attachment]:first-child_[data-composer-banner-surface=attached]]:before:border-t-0",
         className,
       )}
       {...props}