diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
index 10d67802a2fb..823bdf4cc36e 100644
--- a/drivers/xen/xen-scsiback.c
+++ b/drivers/xen/xen-scsiback.c
@@ -908,7 +908,7 @@ static int scsiback_add_translation_entry(struct vscsibk_info *info,
 	mutex_unlock(&scsiback_mutex);
 
 	if (!tpg) {
-		pr_err("%s:%d %s\n", phy, unpacked_lun, error);
+		pr_err("%s:%llu %s\n", phy, unpacked_lun, error);
 		return -ENODEV;
 	}