diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c
index 90dcdc40ac71a46fc75f1efd47243e18137e0367..5e0e9fcc0d4dcd874fb4c008e6e8f02c51ca47ba 100644
--- a/drivers/nvme/target/admin-cmd.c
+++ b/drivers/nvme/target/admin-cmd.c
@@ -178,6 +178,7 @@ static void nvmet_execute_identify_ctrl(struct nvmet_req *req)
 	id->vid = 0;
 	id->ssvid = 0;
 
+	memset(id->sn, ' ', sizeof(id->sn));
 	bin2hex(id->sn, &ctrl->subsys->serial,
 		min(sizeof(ctrl->subsys->serial), sizeof(id->sn) / 2));
 	memcpy_and_pad(id->mn, sizeof(id->mn), model, sizeof(model) - 1, ' ');