diff --git a/bgpd/bgp_nexthop.h b/bgpd/bgp_nexthop.h
index 150e86c..a8b92df 100644
--- a/bgpd/bgp_nexthop.h
+++ b/bgpd/bgp_nexthop.h
@@ -21,6 +21,8 @@
 #ifndef _QUAGGA_BGP_NEXTHOP_H
 #define _QUAGGA_BGP_NEXTHOP_H
 
+#include "if.h"
+
 #define BGP_SCAN_INTERVAL_DEFAULT   60
 #define BGP_IMPORT_INTERVAL_DEFAULT 15