diff --git a/Utility-containers.md b/Utility-containers.md
index ff80d76..a68b34c 100644
--- a/Utility-containers.md
+++ b/Utility-containers.md
@@ -68,7 +68,6 @@ A few dilemmas had already emerged before even having started writing any code.
 * [Building an OS by nanobyte](https://www.youtube.com/watch?v=9t-SPC7Tczc&list=PLFjM7v6KGMpiH2G-kT781ByCNC_0pKpPN&t=1s&ab_channel=nanobyte): live-coding with a digest of the most important concepts behind-the-hood.
 ### Official documentation:
 * [AMD64 Architecture Programmer’s Manual Volume 1: Application Programming][amd64v1] 
-* [AMD64 Architecture Programmers Manual Volume 2: System Programming][amd64v2]
 * [Intel® 64 and IA-32 Architectures Software Developer Manuals][intel64]
 
 [//]: # (Second part of reference-style links)