diff --git a/bridge/config/config.go b/bridge/config/config.go
index d75d3e18..1cf0b9f5 100644
--- a/bridge/config/config.go
+++ b/bridge/config/config.go
@@ -41,6 +41,7 @@ type FileInfo struct {
 	URL     string
 	Size    int64
 	Avatar  bool
+	SHA     string
 }
 
 type ChannelInfo struct {
diff --git a/gateway/gateway.go b/gateway/gateway.go
index 3d0a61ed..c16264a2 100644
--- a/gateway/gateway.go
+++ b/gateway/gateway.go
@@ -362,6 +362,7 @@ func (gw *Gateway) handleFiles(msg *config.Message) {
 			durl := gw.Config.General.MediaServerDownload + "/" + sha1sum + "/" + fi.Name
 			extra := msg.Extra["file"][i].(config.FileInfo)
 			extra.URL = durl
+			extra.SHA = sha1sum
 			msg.Extra["file"][i] = extra
 			req, _ := http.NewRequest("PUT", url, reader)
 			req.Header.Set("Content-Type", "binary/octet-stream")