diff --git a/lib/libnetgraph/debug.c b/lib/libnetgraph/debug.c
index dfc75f5268e..90efc5550da 100644
--- a/lib/libnetgraph/debug.c
+++ b/lib/libnetgraph/debug.c
@@ -76,6 +76,8 @@ __FBSDID("$FreeBSD$");
 #include <netgraph/ng_hub.h>
 #include <netgraph/ng_iface.h>
 #include <netgraph/ng_ip_input.h>
+#include <netinet/ip_fw.h>
+#include <netinet/ip_fw_private.h> /* the NGM cookie is here */
 #include <netgraph/ng_ipfw.h>
 #include <netgraph/ng_ksocket.h>
 #include <netgraph/ng_l2tp.h>