diff --git a/bgpd/bgp_attr.h b/bgpd/bgp_attr.h
index 9c5bf87..e44ff3a 100644
--- a/bgpd/bgp_attr.h
+++ b/bgpd/bgp_attr.h
@@ -27,6 +27,8 @@
 #define CHECK_BITMAP(MAP, NUM) \
         CHECK_FLAG (MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))
 
+#define BGP_MED_MAX UINT32_MAX
+
 /* BGP Attribute type range. */
 #define BGP_ATTR_TYPE_RANGE     256
 #define BGP_ATTR_BITMAP_SIZE    (BGP_ATTR_TYPE_RANGE / BITMAP_NBBY)