diff --git a/src/vs/editor/contrib/review/review.ts b/src/vs/editor/contrib/review/review.ts
index 600316fe377f17de191663b13cc0607d8de31aa3..04c3cb4ebdd8381624272e753590380a07802c54 100644
--- a/src/vs/editor/contrib/review/review.ts
+++ b/src/vs/editor/contrib/review/review.ts
@@ -501,6 +501,10 @@ export class ReviewController implements IEditorContribution {
 	setComments(commentThreads: modes.CommentThread[]): void {
 		this._commentThreads = commentThreads;
 
+		if (this._commentThreads.length === 0) {
+			return;
+		}
+
 		if (!this._reviewSwitch) {
 			this._reviewSwitch = new ReviewSwitchWidget(this._reviewModel);
 			this.editor.addOverlayWidget(this._reviewSwitch);