diff --git a/704.md b/704.md
index fde82088..3db576c5 100644
--- a/704.md
+++ b/704.md
@@ -31,4 +31,6 @@ Each client has a `master` key (denoted with `m`). This key can be the profile `
        - `3bf0c63f`, `cb934634`, `07af97a5`, `e5ee64fa`, `883d107e`, `f9e55847`, `2c4eb9aa`, `aefa459d`
   - derive the `dm parent key`: `m/25709'/1237'/p1'/p2'/.../p8'`
 
-> **Note** the reason for splitting is that each level of the path can have a max value of 2<sup>32</sup>-1
+> **Note** the reason for using the peer's public key (`Bob`) in the `dm parent key` derivation is to always arive at the same value even if prio state is lost.
+> 
+> **Note** the reason for splitting is that each level of the path can have a max value of 2<sup>32</sup>-1.