diff --git a/src/components/overrides/Sidebar.astro b/src/components/overrides/Sidebar.astro
index 3153b58d8b588e2..6ef236c0fc3d34b 100644
--- a/src/components/overrides/Sidebar.astro
+++ b/src/components/overrides/Sidebar.astro
@@ -95,7 +95,7 @@ async function handleGroup(group: Group): Promise<SidebarEntry> {
 			label: group.label,
 			order: group.order,
 			attrs: {},
-			isCurrent: indexLink.href.slice(1, -1) === Astro.params.slug,
+			isCurrent: Astro.url.pathname.startsWith(indexLink.href),
 		} as Link;
 	}