diff --git a/lib/AppleAuthModule.js b/lib/AppleAuthModule.js
index 45cf4ad2..d1c6830c 100644
--- a/lib/AppleAuthModule.js
+++ b/lib/AppleAuthModule.js
@@ -103,6 +103,8 @@ export default class AppleAuthModule {
   ) {
     throwIfNotSupported(this.isSupported);
 
+    requestOptions = { ...requestOptions };
+
     if (!Object.hasOwnProperty.call(requestOptions, ['nonceEnabled'])) {
       requestOptions.nonceEnabled = true;
     } else if (typeof requestOptions.nonceEnabled !== 'boolean') {