diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index 00ec8d5d7e7ee2f1c79dc7446127f13c7e23a331..2ffbd16b79e00279235244c3412046062a86fec5 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -170,7 +170,7 @@ void __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk,
 }
 EXPORT_SYMBOL_GPL(__inet_twsk_hashdance);
 
-void tw_timer_handler(unsigned long data)
+static void tw_timer_handler(unsigned long data)
 {
 	struct inet_timewait_sock *tw = (struct inet_timewait_sock *)data;