diff --git a/webauthn/src/index.ts b/webauthn/src/index.ts
index 906450b8..15420deb 100644
--- a/webauthn/src/index.ts
+++ b/webauthn/src/index.ts
@@ -15,6 +15,8 @@ if (ExpoWebauthn) {
       return parse(await webauthn.create(stringify(options.publicKey)));
     },
   } as CredentialsContainer;
+  // @ts-expect-error -- turnkey's webauthn support detection
+  global.window.PublicKeyCredential = {} as PublicKeyCredential;
 }
 
 function stringify(value: unknown) {