diff --git a/src/@ionic-native/plugins/keychain/index.ts b/src/@ionic-native/plugins/keychain/index.ts
index 9d00021d6..eb01b593f 100644
--- a/src/@ionic-native/plugins/keychain/index.ts
+++ b/src/@ionic-native/plugins/keychain/index.ts
@@ -1,5 +1,5 @@
 import { Injectable } from '@angular/core';
-import { Cordova, Plugin } from '@ionic-native/core';
+import { Cordova, Plugin, IonicNativePlugin } from '@ionic-native/core';
 
 
 /**
@@ -33,13 +33,13 @@ import { Cordova, Plugin } from '@ionic-native/core';
   platforms: ['iOS']
 })
 @Injectable()
-export class Keychain {
+export class Keychain extends IonicNativePlugin {
 
   /**
    * Retrieves a value for a key
    *
    * @param {string} key the key to retrieve
-   * @param {string} TouchIDMessage the message to show underneath the TouchID prompt (if any)
+   * @param {string} [touchIDMessage] the message to show underneath the TouchID prompt (if any)
    */
   @Cordova({
     callbackOrder: 'reverse'
@@ -51,7 +51,7 @@ export class Keychain {
    *
    * @param {string} key the key to set
    * @param {string|number|boolean} value the value to set
-   * @param {boolean} useTouchID whether to store the value with security such that TouchID will be needed to grab it
+   * @param {boolean} [useTouchID] whether to store the value with security such that TouchID will be needed to grab it
    */
   @Cordova({
     callbackOrder: 'reverse'
@@ -62,7 +62,7 @@ export class Keychain {
    * Gets a JSON value for a key
    *
    * @param {string} key the key to retrieve
-   * @param {string} TouchIDMessage the message to show underneath the TouchID prompt (if any)
+   * @param {string} touchIDMessage the message to show underneath the TouchID prompt (if any)
    */
   @Cordova({
     callbackOrder: 'reverse'
@@ -73,8 +73,8 @@ export class Keychain {
    * Sets a JSON value for a key
    *
    * @param {string} key the key to set
-   * @param {any} value the value to set
-   * @param {boolean} Wether to store the value with security such that TouchID will be needed to grab it
+   * @param {any} obj value the value to set
+   * @param {boolean} [useTouchId] Wether to store the value with security such that TouchID will be needed to grab it
    */
   @Cordova({
     callbackOrder: 'reverse'
diff --git a/src/@ionic-native/plugins/media/index.ts b/src/@ionic-native/plugins/media/index.ts
index 482638656..6335a1264 100644
--- a/src/@ionic-native/plugins/media/index.ts
+++ b/src/@ionic-native/plugins/media/index.ts
@@ -92,7 +92,6 @@ export class MediaObject {
   })
   startRecord(): void { }
 
-
   /**
    * Stops recording
    */
@@ -124,6 +123,7 @@ export class MediaObject {
     sync: true
   })
   stop(): void { }
+
 }
 
 export type MediaStatusUpdateCallback = (statusCode: number) => void;
@@ -262,9 +262,9 @@ export class MediaPlugin extends IonicNativePlugin {
   /**
    * Open a media file
    * @param src {string} A URI containing the audio content.
-   * @param onStatusUpdate {MediaStatusUpdateCallback} A callback function to be invoked when the status of the file changes
-   * @param onSuccess {Function} A callback function to be invoked after the current play, record, or stop action is completed
-   * @param onError {MediaErrorCallback} A callback function is be invoked if an error occurs.
+   * @param [onStatusUpdate] {MediaStatusUpdateCallback} A callback function to be invoked when the status of the file changes
+   * @param [onSuccess] {Function} A callback function to be invoked after the current play, record, or stop action is completed
+   * @param [onError] {MediaErrorCallback} A callback function is be invoked if an error occurs.
    * @return {MediaObject}
    */
   @CordovaCheck()