diff --git a/include/net/stp.h b/include/net/stp.h
index ad447f105417def47daff3e65f93de65d26f0917..3af174d70d9e8ca988122b75358703b99c0b4d4a 100644
--- a/include/net/stp.h
+++ b/include/net/stp.h
@@ -8,7 +8,7 @@ struct stp_proto {
 	void		*data;
 };
 
-extern int stp_proto_register(const struct stp_proto *proto);
-extern void stp_proto_unregister(const struct stp_proto *proto);
+int stp_proto_register(const struct stp_proto *proto);
+void stp_proto_unregister(const struct stp_proto *proto);
 
 #endif /* _NET_STP_H */