diff --git a/apps/v4/registry/new-york-v4/ui/sidebar.tsx b/apps/v4/registry/new-york-v4/ui/sidebar.tsx
index 9daf24003b4..c61076dd305 100644
--- a/apps/v4/registry/new-york-v4/ui/sidebar.tsx
+++ b/apps/v4/registry/new-york-v4/ui/sidebar.tsx
@@ -643,7 +643,7 @@ function SidebarMenuSub({ className, ...props }: React.ComponentProps<"ul">) {
       data-slot="sidebar-menu-sub"
       data-sidebar="menu-sub"
       className={cn(
-        "border-sidebar-border mx-3.5 flex min-w-0 translate-x-px flex-col gap-1 border-l px-2.5 py-0.5",
+        "border-sidebar-border mx-3.5 flex min-w-0 translate-x-px flex-col gap-1 px-2.5 py-0.5 group-data-[side=left]:border-l group-data-[side=right]:border-r",
         "group-data-[collapsible=icon]:hidden",
         className
       )}