--- nping/ProbeMode.cc
+++ nping/ProbeMode.cc
@@ -692,10 +692,14 @@
     }else{
        hoplimit=DEFAULT_IPv6_TTL;
     }
+#if defined(IPV6_UNICAST_HOPS)
     if( setsockopt(rawfd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, (char *)&hoplimit, sizeof(hoplimit)) != 0 )
         outError(QT_2, "doIPv6ThroughSocket(): setsockopt() for Unicast Hop Limit on IPv6 socket failed");
+#endif
+#if defined(IPV6_MULTICAST_HOPS)
     if( setsockopt(rawfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (char *)&hoplimit, sizeof(hoplimit)) != 0 )
         outError(QT_2, "doIPv6ThroughSocket(): setsockopt() for Multicast Hop Limit on IPv6 socket failed");
+#endif
 
 #ifdef IPV6_CHECKSUM  /* This is not available in when compiling with MinGW */
     /* Transport layer checksum */