diff --git a/src/vs/workbench/parts/comments/electron-browser/commentsEditorContribution.ts b/src/vs/workbench/parts/comments/electron-browser/commentsEditorContribution.ts
index bb6bbe74b9fdb1189f71f775449d0df6c25c519d..1d3a49b5775939dc0dffa91629d31a489d2b7ffa 100644
--- a/src/vs/workbench/parts/comments/electron-browser/commentsEditorContribution.ts
+++ b/src/vs/workbench/parts/comments/electron-browser/commentsEditorContribution.ts
@@ -381,6 +381,7 @@ export class ReviewController implements IEditorContribution {
 					let matchedZone = matchedZones[0];
 					let index = this._commentWidgets.indexOf(matchedZone);
 					this._commentWidgets.splice(index, 1);
+					matchedZone.dispose();
 				}
 			});