diff --git a/src/browser/AccessibilityManager.ts b/src/browser/AccessibilityManager.ts
index 1be3342d..80092202 100644
--- a/src/browser/AccessibilityManager.ts
+++ b/src/browser/AccessibilityManager.ts
@@ -53,6 +53,7 @@ export class AccessibilityManager extends Disposable {
   ) {
     super();
     this._accessibilityTreeRoot = document.createElement('div');
+    this._accessibilityTreeRoot.setAttribute('role', 'document');
     this._accessibilityTreeRoot.classList.add('xterm-accessibility');
 
     this._rowContainer = document.createElement('div');