diff --git a/src/client/theme-default/composables/outline.ts b/src/client/theme-default/composables/outline.ts
index 704aaf6a..d44e5074 100644
--- a/src/client/theme-default/composables/outline.ts
+++ b/src/client/theme-default/composables/outline.ts
@@ -44,7 +44,8 @@ function serializeHeader(h: Element): string {
     if (node.nodeType === 1) {
       if (
         (node as Element).classList.contains('VPBadge') ||
-        (node as Element).classList.contains('header-anchor')
+        (node as Element).classList.contains('header-anchor') ||
+        (node as Element).classList.contains('ignore-header')
       ) {
         continue
       }