diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c
index 7cb3e4f07c10..632c3109dee5 100644
--- a/net/smc/smc_pnet.c
+++ b/net/smc/smc_pnet.c
@@ -27,7 +27,7 @@
 static struct nla_policy smc_pnet_policy[SMC_PNETID_MAX + 1] = {
 	[SMC_PNETID_NAME] = {
 		.type = NLA_NUL_STRING,
-		.len = SMC_MAX_PNETID_LEN - 1
+		.len = SMC_MAX_PNETID_LEN
 	},
 	[SMC_PNETID_ETHNAME] = {
 		.type = NLA_NUL_STRING,