diff --git a/src/download/download-engine/engine/download-engine-browser.ts b/src/download/download-engine/engine/download-engine-browser.ts
index 6086a0f..851d568 100644
--- a/src/download/download-engine/engine/download-engine-browser.ts
+++ b/src/download/download-engine/engine/download-engine-browser.ts
@@ -44,8 +44,6 @@ export default class DownloadEngineBrowser<WriteStream extends BaseDownloadEngin
      * Download file
      */
     public static async createFromOptions(options: DownloadEngineOptionsBrowser) {
-        options = structuredClone(options);
-
         DownloadEngineBrowser._validateOptions(options);
         const partURLs = "partURLs" in options ? options.partURLs : [options.url];
 
diff --git a/src/download/download-engine/engine/download-engine-nodejs.ts b/src/download/download-engine/engine/download-engine-nodejs.ts
index 632aac7..34aaeca 100644
--- a/src/download/download-engine/engine/download-engine-nodejs.ts
+++ b/src/download/download-engine/engine/download-engine-nodejs.ts
@@ -110,8 +110,6 @@ export default class DownloadEngineNodejs<T extends DownloadEngineWriteStreamNod
      * By default, it will guess the strategy based on the URL
      */
     public static async createFromOptions(options: DownloadEngineOptionsNodejs) {
-        options = structuredClone(options);
-
         DownloadEngineNodejs._validateOptions(options);
         const partURLs = "partURLs" in options ? options.partURLs : [options.url];
 
diff --git a/src/download/download-engine/streams/download-engine-fetch-stream/base-download-engine-fetch-stream.ts b/src/download/download-engine/streams/download-engine-fetch-stream/base-download-engine-fetch-stream.ts
index 6b7eba8..f0d290a 100644
--- a/src/download/download-engine/streams/download-engine-fetch-stream/base-download-engine-fetch-stream.ts
+++ b/src/download/download-engine/streams/download-engine-fetch-stream/base-download-engine-fetch-stream.ts
@@ -132,13 +132,15 @@ export default abstract class BaseDownloadEngineFetchStream extends EventEmitter
     public async fetchDownloadInfo(url: string): Promise<DownloadInfoResponse> {
         let throwErr: Error | null = null;
 
+        const tryHeaders = "tryHeaders" in this.options && this.options.tryHeaders ? this.options.tryHeaders.slice() : [];
+
         const fetchDownloadInfoCallback = async (): Promise<DownloadInfoResponse | null> => {
             try {
                 return await this.fetchDownloadInfoWithoutRetry(url);
             } catch (error: any) {
                 if (error instanceof HttpError && !this.retryOnServerError(error)) {
-                    if ("tryHeaders" in this.options && this.options.tryHeaders?.length) {
-                        this.options.headers = this.options.tryHeaders.shift();
+                    if ("tryHeaders" in this.options && tryHeaders.length) {
+                        this.options.headers = tryHeaders.shift();
                         await sleep(this.options.tryHeadersDelay ?? 0);
                         return await fetchDownloadInfoCallback();
                     }