diff --git a/server/service/storage/image.go b/server/service/storage/image.go
index 5f8118d..9eb3f28 100644
--- a/server/service/storage/image.go
+++ b/server/service/storage/image.go
@@ -16,7 +16,7 @@ import (
 
 const (
 	imageDirectory = "/data"
-	imageNone      = ""
+	imageNone      = "\n"
 	cdromFlag      = "/sys/kernel/config/usb_gadget/g0/functions/mass_storage.disk0/lun.0/cdrom"
 	mountDevice    = "/sys/kernel/config/usb_gadget/g0/functions/mass_storage.disk0/lun.0/file"
 	roFlag         = "/sys/kernel/config/usb_gadget/g0/functions/mass_storage.disk0/lun.0/ro"