diff --git a/cmdDownload.go b/cmdDownload.go
index 9affc93..8bfd1d6 100644
--- a/cmdDownload.go
+++ b/cmdDownload.go
@@ -19,6 +19,11 @@ func init() {
 }
 
 func cmdDownloadFile(cmd []string) {
+
+	if len(cmd) < 2 {
+		printToView("Feed", fmt.Sprintf("/%s $messageId $fileName - Download a file to user's downloadpath", cmd[0]))
+		return
+	}
 	messageID, _ := strconv.Atoi(cmd[1])
 	var fileName string
 	if len(cmd) == 3 {