diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index b0ffbcd5432d..55d604c9b3b3 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -812,8 +812,7 @@ int esp6_input_done2(struct sk_buff *skb, int err)
 		struct tcphdr *th;
 
 		offset = ipv6_skip_exthdr(skb, offset, &nexthdr, &frag_off);
-
-		if (offset < 0) {
+		if (offset == -1) {
 			err = -EINVAL;
 			goto out;
 		}