diff --git a/704.md b/704.md
index fa4243c..fde8208 100644
--- a/704.md
+++ b/704.md
@@ -30,3 +30,5 @@ Each client has a `master` key (denoted with `m`). This key can be the profile `
   - split the public key hex string in 8 chunks:
        - `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