diff --git a/apps/browser/src/fido2/content/page-script.ts b/apps/browser/src/fido2/content/page-script.ts
index e72b2f24441..f53aa0a2d4f 100644
--- a/apps/browser/src/fido2/content/page-script.ts
+++ b/apps/browser/src/fido2/content/page-script.ts
@@ -25,6 +25,7 @@ if (!browserNativeWebauthnSupport) {
         return Promise.resolve(true);
       }
     } as any;
+    window.AuthenticatorAttestationResponse = class {} as any;
   } catch {
     /* empty */
   }