diff --git a/comment-sample/src/extension.ts b/comment-sample/src/extension.ts
index ed0c8419..094c4626 100644
--- a/comment-sample/src/extension.ts
+++ b/comment-sample/src/extension.ts
@@ -15,13 +15,10 @@ export function activate(context: vscode.ExtensionContext) {
 		provideCommentingRanges: (document: vscode.TextDocument, token: vscode.CancellationToken) => {
 			let lineCount = document.lineCount;
 			return [new vscode.Range(0, 0, lineCount - 1, 0)];
-		}
-	};
-
-	// callback when users click `+` button on Gutter or run Create Comment command from Command Palette
-	commentController.emptyCommentThreadFactory = {
+		},
+		// callback when users click `+` button on Gutter or run Create Comment command from Command Palette
 		createEmptyCommentThread: (document: vscode.TextDocument, range: vscode.Range) => {
-		// create a empty thread
+			// create a empty thread
 			let thread = commentController.createCommentThread(`${++threadId}`, document.uri, range, []);
 			// by default, a comment thread is collapsed, for newly created empty comment thread, we want to expand it and users can start commenting immediately
 			thread.collapsibleState = vscode.CommentThreadCollapsibleState.Expanded;
diff --git a/comment-sample/src/typings/vscode.proposed.d.ts b/comment-sample/src/typings/vscode.proposed.d.ts
index 9876a997..a1334387 100644
--- a/comment-sample/src/typings/vscode.proposed.d.ts
+++ b/comment-sample/src/typings/vscode.proposed.d.ts
@@ -155,9 +155,7 @@ declare module 'vscode' {
 		 * Provide a list of ranges which allow new comment threads creation or null for a given document
 		 */
 		provideCommentingRanges(document: TextDocument, token: CancellationToken): ProviderResult<Range[]>;
-	}
 
-	export interface EmptyCommentThreadFactory {
 		/**
 		 * The method `createEmptyCommentThread` is called when users attempt to create new comment thread from the gutter or command palette.
 		 * Extensions still need to call `createCommentThread` inside this call when appropriate.
@@ -192,11 +190,6 @@ declare module 'vscode' {
 		 */
 		commentingRangeProvider?: CommentingRangeProvider;
 
-		/**
-		 * Optional new comment thread factory.
-		 */
-		emptyCommentThreadFactory?: EmptyCommentThreadFactory;
-
 		/**
 		 * Dispose this comment controller.
 		 */