diff --git a/app/javascript/packages/webauthn/is-expected-error.ts b/app/javascript/packages/webauthn/is-expected-error.ts
index 505f5a570d4..04d1c88aca7 100644
--- a/app/javascript/packages/webauthn/is-expected-error.ts
+++ b/app/javascript/packages/webauthn/is-expected-error.ts
@@ -1,10 +1,17 @@
 /**
- * Set of expected DOM exceptions, which occur based on some user behavior that is not noteworthy,
- * such as declining permissions or timeout due to inactivity.
+ * Set of expected DOM exceptions, which occur based on some user behavior that is not noteworthy:
+ *
+ * - Declining permissions
+ * - Timeout due to inactivity
+ * - Invalid state such as duplicate key enrollment
  *
  * @see https://webidl.spec.whatwg.org/#idl-DOMException
  */
-const EXPECTED_DOM_EXCEPTIONS: Set<string> = new Set(['NotAllowedError', 'TimeoutError']);
+const EXPECTED_DOM_EXCEPTIONS: Set<string> = new Set([
+  'NotAllowedError',
+  'TimeoutError',
+  'InvalidStateError',
+]);
 
 const isExpectedWebauthnError = (error: Error): boolean =>
   error instanceof DOMException && EXPECTED_DOM_EXCEPTIONS.has(error.name);