diff --git a/ip/xfrm_state.c b/ip/xfrm_state.c
index 140a450..d7d13c8 100644
--- a/ip/xfrm_state.c
+++ b/ip/xfrm_state.c
@@ -125,7 +125,7 @@ static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type,
 
 	strncpy(alg->alg_name, name, sizeof(alg->alg_name));
 
-	if (slen > 2 && strncmp(key, "0x", 2) == 0) {
+	if (slen >= 2 && strncmp(key, "0x", 2) == 0) {
 		/* split two chars "0x" from the top */
 		char *p = key + 2;
 		int plen = slen - 2;