diff --git a/src/development/design/security.md b/src/development/design/security.md
index 08e92e3..d04f521 100644
--- a/src/development/design/security.md
+++ b/src/development/design/security.md
@@ -11,4 +11,4 @@
 ## Isolation
 *To-Do*
 
-[^hmac]: https://cryptobook.nakov.com/mac-and-key-derivation
+[^hmac]: [MAC and Key Derivation](https://cryptobook.nakov.com/mac-and-key-derivation)