diff --git a/devices/device.js b/devices/device.js
index 87b280a5..e0a94d59 100644
--- a/devices/device.js
+++ b/devices/device.js
@@ -1872,6 +1872,11 @@ module.exports = function (RED) {
             }
         }
 
+        /**
+         * Updates the status icon of this device node.
+         *
+         * @param {boolean} is_local - Indicates whether the current command was issued using local fulfillment.
+         */
         updateStatusIcon(is_local) {
             const me = this;
             let text = '';
@@ -2845,10 +2850,12 @@ module.exports = function (RED) {
             return traits;
         }
 
-        //
-        //
-        //
-        //
+        /**
+         * Updates the states of this device with new values.
+         *
+         * @param {Object} from_states - The new states values.
+         * @returns {Array} - Array of the state keys that were modified.
+         */
         updateState(from_states) {
             const me = this;
             let modified = [];
diff --git a/lib/Auth.js b/lib/Auth.js
index 8ce98980..95dbe99a 100755
--- a/lib/Auth.js
+++ b/lib/Auth.js
@@ -167,7 +167,7 @@ class Auth {
     /**
      * Retrieves the duration (in minutes) for which an access token is valid.
      *
-     * @return {number} The duration in minutes.
+     * @returns {number} The duration in minutes.
      */
     getAccessTokenDuration() {
         return this._accessTokenDuration;
diff --git a/lib/SmartHome.js b/lib/SmartHome.js
index 6e6520fc..29491cb0 100755
--- a/lib/SmartHome.js
+++ b/lib/SmartHome.js
@@ -604,7 +604,7 @@ class GoogleSmartHome {
      * read the local app.js file, parse the version number out of the file and compare the version numbers with each
      * other. If the version numbers do not match, the user gets a message on Node-RED's debug panel.
      *
-     * @param {string} remoteAppJsVersion
+     * @param {string} remoteAppJsVersion - version number of the script running on the speaker
      */
     checkAppJsVersion(remoteAppJsVersion) {
         const appJsPath = path.resolve(__dirname, '../local-execution/app.js');