diff --git a/src/util.c b/src/util.c
index 30b7197..2515dd2 100644
--- a/src/util.c
+++ b/src/util.c
@@ -71,7 +71,11 @@ get_resolvconf_addr()
 void
 socket_setrtable(int fd, int rtable)
 {
+#ifdef SO_RTABLE
 	if (setsockopt (fd, IPPROTO_IP, SO_RTABLE, &rtable, sizeof(rtable)) == -1)
-	    err(1, "Failed to set routing table %d", rtable);
+		err(1, "Failed to set routing table %d", rtable);
+#else
+	fprintf(stderr, "Routing domain support was not available at compile time.\n");
+#endif
 }
 #endif