diff --git a/lib/vscode/src/vs/workbench/contrib/extensions/browser/extensionsViewlet.ts b/lib/vscode/src/vs/workbench/contrib/extensions/browser/extensionsViewlet.ts
index 6f842c106..530a6298f 100644
--- a/lib/vscode/src/vs/workbench/contrib/extensions/browser/extensionsViewlet.ts
+++ b/lib/vscode/src/vs/workbench/contrib/extensions/browser/extensionsViewlet.ts
@@ -490,6 +490,7 @@ export class ExtensionsViewPaneContainer extends ViewPaneContainer implements IE
 			dismiss.style.display = 'block';
 			dismiss.style.textAlign = 'right';
 			dismiss.style.cursor = 'pointer';
+			dismiss.tabIndex = 0;
 			dismiss.onclick = () => {
 				helperHeader.remove();
 				localStorage.setItem(extensionHelperLocalStorageKey, 'viewed');