diff --git a/windows/security/book/subject-index.md b/windows/security/book/features-index.md
similarity index 98%
rename from windows/security/book/subject-index.md
rename to windows/security/book/features-index.md
index 91e3413386..3d424069bb 100644
--- a/windows/security/book/subject-index.md
+++ b/windows/security/book/features-index.md
@@ -1,6 +1,6 @@
 ---
-title: Subject index
-description: Windows security book subject index.
+title: Features index
+description: Windows security book features index.
 ms.topic: overview
 ms.date: 06/17/2024
 ---
diff --git a/windows/security/book/toc.yml b/windows/security/book/toc.yml
index 9e888a7e68..5e8eb89d50 100644
--- a/windows/security/book/toc.yml
+++ b/windows/security/book/toc.yml
@@ -63,5 +63,5 @@ items:
     href: security-foundation-secure-supply-chain.md
 - name: Conclusion
   href: conclusion.md
-- name: Subject index
+- name: Features index
   href: subject-index.md
\ No newline at end of file