diff --git a/lib/sockopt.c b/lib/sockopt.c
index 2afa3c8..786e152 100644
--- a/lib/sockopt.c
+++ b/lib/sockopt.c
@@ -61,11 +61,11 @@
 #ifdef IPV6_RECVPKTINFO		/*2292bis-01*/
   ret = setsockopt(sock, IPPROTO_IPV6, IPV6_RECVPKTINFO, &val, sizeof(val));
   if (ret < 0)
-    zlog_warn ("can't setsockopt IPV6_RECVPKTINFO : %s", strerror (errno));
+    zlog_warn ("can't setsockopt IPV6_RECVPKTINFO : %s", safe_strerror (errno));
 #else	/*RFC2292*/
   ret = setsockopt(sock, IPPROTO_IPV6, IPV6_PKTINFO, &val, sizeof(val));
   if (ret < 0)
-    zlog_warn ("can't setsockopt IPV6_PKTINFO : %s", strerror (errno));
+    zlog_warn ("can't setsockopt IPV6_PKTINFO : %s", safe_strerror (errno));
 #endif /* INIA_IPV6 */
   return ret;
 }