diff --git a/configure.ac b/configure.ac
index 51bc8bd..92c831a 100755
--- a/configure.ac
+++ b/configure.ac
@@ -472,6 +472,9 @@
 #if HAVE_SYS_SOCKET_H
 # include <sys/socket.h>
 #endif
+#ifdef __APPLE__
+# define __APPLE_USE_RFC_3542
+#endif
 #if HAVE_NETINET_IN_H
 # include <netinet/in.h>
 #endif
diff --git a/lib/zebra.h b/lib/zebra.h
index 404b832..ffca7a8 100644
--- a/lib/zebra.h
+++ b/lib/zebra.h
@@ -142,6 +142,10 @@
 #include <sys/sockio.h>
 #endif /* HAVE_SYS_SOCKIO_H */
 
+#ifdef __APPLE__
+#define __APPLE_USE_RFC_3542
+#endif
+
 #ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif /* HAVE_NETINET_IN_H */