diff --git a/src/cn/trinea/android/demo/DownloadManagerDemo.java b/src/cn/trinea/android/demo/DownloadManagerDemo.java
index ea32f69..43332cf 100644
--- a/src/cn/trinea/android/demo/DownloadManagerDemo.java
+++ b/src/cn/trinea/android/demo/DownloadManagerDemo.java
@@ -124,7 +124,7 @@ private void initData() {
 
             @Override
             public void onClick(View v) {
-                File folder = new File(DOWNLOAD_FOLDER_NAME);
+                File folder = Environment.getExternalStoragePublicDirectory(DOWNLOAD_FOLDER_NAME);
                 if (!folder.exists() || !folder.isDirectory()) {
                     folder.mkdirs();
                 }