diff --git a/book/source/adv/17a-adv-certificates.md b/book/source/adv/certificates.md
similarity index 100%
rename from book/source/adv/17a-adv-certificates.md
rename to book/source/adv/certificates.md
diff --git a/book/source/adv/17b-adv-private.md b/book/source/adv/private.md
similarity index 100%
rename from book/source/adv/17b-adv-private.md
rename to book/source/adv/private.md
diff --git a/book/source/adv/17e-adv-sig-component.md b/book/source/adv/sign_component.md
similarity index 100%
rename from book/source/adv/17e-adv-sig-component.md
rename to book/source/adv/sign_component.md
diff --git a/book/source/adv/17d-adv-sign-data.md b/book/source/adv/sign_data.md
similarity index 100%
rename from book/source/adv/17d-adv-sign-data.md
rename to book/source/adv/sign_data.md
diff --git a/book/source/adv/17c-adv-signatures.md b/book/source/adv/signatures.md
similarity index 100%
rename from book/source/adv/17c-adv-signatures.md
rename to book/source/adv/signatures.md
diff --git a/book/source/index.md b/book/source/index.md
index 0e4a7ac..60d6af8 100644
--- a/book/source/index.md
+++ b/book/source/index.md
@@ -30,11 +30,11 @@ SPDX-License-Identifier: CC-BY-SA-4.0
 16-versions.md
 17-migration.md
 
-adv/17a-adv-certificates.md
-adv/17b-adv-private.md
-adv/17c-adv-signatures.md
-adv/17d-adv-sign-data.md
-adv/17e-adv-sig-component.md
+adv/certificates.md
+adv/private.md
+adv/signatures.md
+adv/sign_data.md
+adv/sign_component.md
 
 zoom/certificates.md
 zoom/private_keys.md