diff --git a/downloader/downloader.go b/downloader/downloader.go
index 90bb75eca..4c6cd2560 100644
--- a/downloader/downloader.go
+++ b/downloader/downloader.go
@@ -211,6 +211,7 @@ func Download(v Data, refer string) error {
 			urls = append(urls, p.URL)
 		}
 		var inputs Aria2Input
+		inputs.Out = title + "." + data.URLs[0].Ext
 		inputs.Header = append(inputs.Header, "Referer: "+refer)
 		rpcData.Params[2] = &inputs
 		for i := range urls {
diff --git a/downloader/types.go b/downloader/types.go
index d57e7ebe1..f39c7625f 100644
--- a/downloader/types.go
+++ b/downloader/types.go
@@ -136,6 +136,8 @@ type Aria2RPCData struct {
 // Aria2Input options for `aria2.addUri`
 // https://aria2.github.io/manual/en/html/aria2c.html#id3
 type Aria2Input struct {
+	// The file name of the downloaded file
+	Out string `json:"out"`
 	// For a simple download, only add headers
 	Header []string `json:"header"`
 }