diff --git a/doc/index.md b/doc/index.md
index fd4a24b..a22fc3e 100644
--- a/doc/index.md
+++ b/doc/index.md
@@ -8,4 +8,9 @@
 >   `🔁 Sent by server, recieved by a DIFFERENT client (e.g. target of PRIVMSG)`
 
 * Basics
-   * [Formatting of socket](formatting.md)
\ No newline at end of file
+   * [Formatting of socket](formatting.md)
+
+
+
+* Server Replies, documented
+   * [Not Found](notfound.md)
\ No newline at end of file