diff --git a/lib/nvmf/subsystem.c b/lib/nvmf/subsystem.c
index 506e979b8..314100fff 100644
--- a/lib/nvmf/subsystem.c
+++ b/lib/nvmf/subsystem.c
@@ -290,7 +290,7 @@ spdk_nvmf_subsystem_create(struct spdk_nvmf_tgt *tgt,
 	}
 
 	memset(subsystem->sn, '0', sizeof(subsystem->sn) - 1);
-	subsystem->sn[sizeof(subsystem->sn) - 1] = '\n';
+	subsystem->sn[sizeof(subsystem->sn) - 1] = '\0';
 
 	tgt->subsystems[sid] = subsystem;
 	tgt->discovery_genctr++;