diff --git a/SignalServiceKit/src/Loki/ECKeyPair.swift b/SignalServiceKit/src/Loki/ECKeyPair.swift
index 4fd48b16d..a90c81f8f 100644
--- a/SignalServiceKit/src/Loki/ECKeyPair.swift
+++ b/SignalServiceKit/src/Loki/ECKeyPair.swift
@@ -6,6 +6,7 @@ public extension ECKeyPair {
     }
     
     var hexEncodedPublicKey: String {
+        // Prefixing with "05" is necessary for what seems to be a sort of Signal public key versioning system
         return "05" + publicKey.map { String(format: "%02hhx", $0) }.joined()
     }
 }