diff --git a/lib/services/cognitiveServices/qnamaker/lib/models/index.d.ts b/lib/services/cognitiveServices/qnamaker/lib/models/index.d.ts
index dc5acc9389..c96b063985 100644
--- a/lib/services/cognitiveServices/qnamaker/lib/models/index.d.ts
+++ b/lib/services/cognitiveServices/qnamaker/lib/models/index.d.ts
@@ -123,7 +123,7 @@ export interface UpdateMetadataDTO {
    */
   deleteProperty?: MetadataDTO[];
   /**
-   * List of Metadat associated with answer to be added
+   * List of metadata associated with answer to be added
    */
   add?: MetadataDTO[];
 }
diff --git a/lib/services/cognitiveServices/qnamaker/lib/models/updateMetadataDTO.js b/lib/services/cognitiveServices/qnamaker/lib/models/updateMetadataDTO.js
index 78b3504936..7228da2b8e 100644
--- a/lib/services/cognitiveServices/qnamaker/lib/models/updateMetadataDTO.js
+++ b/lib/services/cognitiveServices/qnamaker/lib/models/updateMetadataDTO.js
@@ -19,7 +19,8 @@ class UpdateMetadataDTO {
    * Create a UpdateMetadataDTO.
    * @property {array} [deleteProperty] List of Metadata associated with answer
    * to be deleted
-   * @property {array} [add] List of Metadat associated with answer to be added
+   * @property {array} [add] List of metadata associated with answer to be
+   * added
    */
   constructor() {
   }