diff --git a/lib/libnetgraph/msg.c b/lib/libnetgraph/msg.c
index 8b4ca06a7166..48447d953265 100644
--- a/lib/libnetgraph/msg.c
+++ b/lib/libnetgraph/msg.c
@@ -42,6 +42,7 @@
 __FBSDID("$FreeBSD$");
 
 #include <sys/types.h>
+#include <sys/socket.h>
 #include <stdarg.h>
 #include <netgraph/ng_message.h>
 #include <netgraph/ng_socket.h>
diff --git a/lib/libnetgraph/sock.c b/lib/libnetgraph/sock.c
index 395f28b7025a..fca3900913df 100644
--- a/lib/libnetgraph/sock.c
+++ b/lib/libnetgraph/sock.c
@@ -42,6 +42,7 @@
 __FBSDID("$FreeBSD$");
 
 #include <sys/types.h>
+#include <sys/socket.h>
 #include <stdarg.h>
 #include <netgraph/ng_message.h>
 #include <netgraph/ng_socket.h>