diff --git a/specs/networking/node-identification.md b/specs/networking/node-identification.md
index 27c1ebf9d..0f1f9832b 100644
--- a/specs/networking/node-identification.md
+++ b/specs/networking/node-identification.md
@@ -23,7 +23,7 @@ It is RECOMMENDED that clients set their TCP port to the default of `9000`.
 
 ## Peer ID Generation
 
-The `libp2p` networking stack identifies peers via a "peer ID." Simply put, a node's Peer ID is the SHA2-256 `multihash` of the node's public key. `go-libp2p-crypto` contains the canonical implementation of how to hash `secp256k1` keys for use as a peer ID.
+The `libp2p` networking stack identifies peers via a "peer ID." Simply put, a node's Peer ID is the SHA2-256 `multihash` of the node's public key struct (serialized in protobuf, refer to the [Peer ID spec](https://github.com/libp2p/specs/pull/100)). `go-libp2p-crypto` contains the canonical implementation of how to hash `secp256k1` keys for use as a peer ID.
 
 # See Also