diff --git a/src/vs/base/browser/ui/list/listWidget.ts b/src/vs/base/browser/ui/list/listWidget.ts
index 84bfcd0408061bef5f25f84390f0bf425233d84c..7180e5a404f369e30b16b89ef42ff03c1121d4b3 100644
--- a/src/vs/base/browser/ui/list/listWidget.ts
+++ b/src/vs/base/browser/ui/list/listWidget.ts
@@ -651,15 +651,13 @@ export class List<T> implements ISpliceable<T>, IDisposable {
 		if (options.ariaLabel) {
 			this.view.domNode.setAttribute('aria-label', options.ariaLabel);
 		}
-		this.view.domNode.setAttribute('aria-setsize', this.length.toString());
+		this.view.domNode.setAttribute('aria-setsize', '0');
 
 		this.style(options);
 	}
 
 	splice(start: number, deleteCount: number, elements: T[] = []): void {
-		this.eventBufferer.bufferEvents(() => {
-			this.spliceable.splice(start, deleteCount, elements);
-		});
+		this.eventBufferer.bufferEvents(() => this.spliceable.splice(start, deleteCount, elements));
 		this.view.domNode.setAttribute('aria-setsize', this.length.toString());
 	}