diff --git a/include/linux/phonet.h b/include/linux/phonet.h
index 4157faa857b6..ee5e3c9e2bca 100644
--- a/include/linux/phonet.h
+++ b/include/linux/phonet.h
@@ -23,6 +23,8 @@
 #ifndef LINUX_PHONET_H
 #define LINUX_PHONET_H
 
+#include <linux/types.h>
+
 /* Automatic protocol selection */
 #define PN_PROTO_TRANSPORT	0
 /* Phonet datagram socket */