diff --git a/bgpd/bgp_damp.c b/bgpd/bgp_damp.c
index 359fce3..ac64723 100644
--- a/bgpd/bgp_damp.c
+++ b/bgpd/bgp_damp.c
@@ -26,6 +26,7 @@
 #include "command.h"
 #include "log.h"
 #include "thread.h"
+#include "filter.h"
 
 #include "bgpd/bgpd.h"
 #include "bgpd/bgp_damp.h"