diff --git a/net/ipv4/netfilter/nf_nat_snmp_basic.c b/net/ipv4/netfilter/nf_nat_snmp_basic.c
index 07f2a49926d4..540ce6ae887c 100644
--- a/net/ipv4/netfilter/nf_nat_snmp_basic.c
+++ b/net/ipv4/netfilter/nf_nat_snmp_basic.c
@@ -260,7 +260,7 @@ static unsigned char asn1_eoc_decode(struct asn1_ctx *ctx, unsigned char *eoc)
 {
 	unsigned char ch;
 
-	if (eoc == 0) {
+	if (eoc == NULL) {
 		if (!asn1_octet_decode(ctx, &ch))
 			return 0;