diff --git a/src/circuit/index.js b/src/circuit/index.js
index dbb70e61..d12d8824 100644
--- a/src/circuit/index.js
+++ b/src/circuit/index.js
@@ -37,6 +37,7 @@ class Relay {
 
   /**
    * Start Relay service.
+   *
    * @returns {void}
    */
   start () {
@@ -52,6 +53,7 @@ class Relay {
 
   /**
    * Stop Relay service.
+   *
    * @returns {void}
    */
   stop () {
@@ -60,6 +62,7 @@ class Relay {
 
   /**
    * Advertise hop relay service in the network.
+   *
    * @returns {Promise<void>}
    */
   async _advertiseService () {
diff --git a/src/circuit/transport.js b/src/circuit/transport.js
index e876fa60..cc798705 100644
--- a/src/circuit/transport.js
+++ b/src/circuit/transport.js
@@ -22,7 +22,7 @@ class Circuit {
   /**
    * Creates an instance of the Circuit Transport.
    *
-   * @constructor
+   * @class
    * @param {object} options
    * @param {Libp2p} options.libp2p
    * @param {Upgrader} options.upgrader
@@ -159,7 +159,7 @@ class Circuit {
    *
    * @param {any} options
    * @param {Function} handler
-   * @return {listener}
+   * @returns {listener}
    */
   createListener (options, handler) {
     if (typeof options === 'function') {
diff --git a/src/circuit/utils.js b/src/circuit/utils.js
index 7426271c..18b61eaf 100644
--- a/src/circuit/utils.js
+++ b/src/circuit/utils.js
@@ -5,8 +5,9 @@ const multihashing = require('multihashing-async')
 
 /**
  * Convert a namespace string into a cid.
+ *
  * @param {string} namespace
- * @return {Promise<CID>}
+ * @returns {Promise<CID>}
  */
 module.exports.namespaceToCid = async (namespace) => {
   const bytes = new TextEncoder('utf8').encode(namespace)