diff --git a/src/main/java/com/yutou/qqbot/models/setu/GetSeTu.java b/src/main/java/com/yutou/qqbot/models/setu/GetSeTu.java
index 3edcc49..a866732 100644
--- a/src/main/java/com/yutou/qqbot/models/setu/GetSeTu.java
+++ b/src/main/java/com/yutou/qqbot/models/setu/GetSeTu.java
@@ -28,7 +28,7 @@ public class GetSeTu extends Model {
             String ret=HttpTools.get("https://api.ixiaowai.cn/api/api.php?return=json");
             JSONObject json=JSONObject.parseObject(ret);
             HttpTools.download(json.getString("imgurl"),
-                    null, new DownloadInterface() {
+                    "setu.jpg", new DownloadInterface() {
                         @Override
                         public void onDownload(File file) {
                             super.onDownload(file);