diff --git a/packages/keystatic/src/app/shell/sidebar/index.tsx b/packages/keystatic/src/app/shell/sidebar/index.tsx
index 877152340..be387259f 100644
--- a/packages/keystatic/src/app/shell/sidebar/index.tsx
+++ b/packages/keystatic/src/app/shell/sidebar/index.tsx
@@ -270,7 +270,7 @@ function useIsCurrent() {
       if (exact) {
         return href === router.pathname ? 'page' : undefined;
       }
-      return href === router.pathname || href.startsWith(`${router.pathname}/`)
+      return href === router.pathname || router.pathname.startsWith(`${href}/`)
         ? 'page'
         : undefined;
     },