lib: routemap.h depends on prefix.h
diff --git a/lib/routemap.h b/lib/routemap.h
index 48fafaf..68129e1 100644
--- a/lib/routemap.h
+++ b/lib/routemap.h
@@ -22,6 +22,8 @@
 #ifndef _ZEBRA_ROUTEMAP_H
 #define _ZEBRA_ROUTEMAP_H
 
+#include "prefix.h"
+
 /* Route map's type. */
 enum route_map_type
 {