diff --git a/lib/msg-v3/index.js b/lib/msg-v3/index.js
index 44de3d5..d8212e9 100644
--- a/lib/msg-v3/index.js
+++ b/lib/msg-v3/index.js
@@ -29,7 +29,6 @@ const { isEmptyObject } = require('./util')
  * @typedef {import('ppppp-keypair').Keypair} Keypair
  */
 
-
 /**
  * @template [T=any]
  * @typedef {{
@@ -39,7 +38,9 @@ const { isEmptyObject } = require('./util')
  *     dataSize: number;
  *     account: string | (typeof ACCOUNT_SELF) | (typeof ACCOUNT_ANY);
  *     accountTips: Array<string> | null;
- *     tangles: Record<string, TangleMetadata>;
+ *     tangles: {
+ *       [tangleID in string]: TangleMetadata
+ *     };
  *     domain: string;
  *     v: 3;
  *   };
@@ -97,7 +98,9 @@ const { isEmptyObject } = require('./util')
  *   keypair: Keypair;
  *   account: string | (typeof ACCOUNT_SELF) | (typeof ACCOUNT_ANY);
  *   accountTips: Array<string> | null;
- *   tangles: Record<string, Tangle>;
+ *   tangles: {
+ *     [tangleID in string]: Tangle
+ *   };
  * }} CreateOpts
  */