diff --git a/packages/playwright-core/src/server/firefox/ffAccessibility.ts b/packages/playwright-core/src/server/firefox/ffAccessibility.ts
index 9bf519c3bb..d8d56b58de 100644
--- a/packages/playwright-core/src/server/firefox/ffAccessibility.ts
+++ b/packages/playwright-core/src/server/firefox/ffAccessibility.ts
@@ -245,7 +245,6 @@ class FFAXNode implements accessibility.AXNode {
     const tokenProperties: Array<keyof channels.AXNode & keyof Protocol.Accessibility.AXTree> = [
       'autocomplete',
       'haspopup',
-      'invalid',
       'orientation',
     ];
     for (const tokenProperty of tokenProperties) {
@@ -261,6 +260,8 @@ class FFAXNode implements accessibility.AXNode {
       axNode.checked = this._payload.checked === true ? 'checked' : this._payload.checked === 'mixed' ? 'mixed' : 'unchecked';
     if ('pressed' in this._payload)
       axNode.pressed = this._payload.pressed === true ? 'pressed' : 'released';
+    if ('invalid' in this._payload)
+      axNode.invalid = this._payload.invalid === true ? 'true' : 'false';
     return axNode;
   }
 }
diff --git a/tests/page/page-accessibility.spec.ts b/tests/page/page-accessibility.spec.ts
index 496819ce95..e6717c5e20 100644
--- a/tests/page/page-accessibility.spec.ts
+++ b/tests/page/page-accessibility.spec.ts
@@ -348,3 +348,20 @@ it('should work when there is a title ', async ({ page }) => {
   expect(snapshot.name).toBe('This is the title');
   expect(snapshot.children[0].name).toBe('This is the content');
 });
+
+it('should work with aria-invalid accessibility tree', async ({ page, browserName, server }) => {
+  await page.goto(server.EMPTY_PAGE);
+  await page.setContent(`<a href="/hi" aria-invalid="true">WHO WE ARE</a>`);
+  expect(await page.accessibility.snapshot()).toEqual({
+    'role': browserName === 'firefox' ? 'document' : 'WebArea',
+    'name': '',
+    'children': [
+      {
+        'role': 'link',
+        'name': 'WHO WE ARE',
+        'invalid': 'true',
+        'value': browserName === 'firefox' ?  `${server.PREFIX}/hi` : undefined
+      }
+    ]
+  });
+});