diff --git a/include/net/tcp.h b/include/net/tcp.h
index bbad196da16c..c8bd83fcabab 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -359,7 +359,7 @@ extern int tcp_use_userconfig_sysctl_handler(struct ctl_table *table,
 				int write, void __user *buffer, size_t *length,
 				loff_t *ppos);
 extern int tcp_proc_delayed_ack_control(struct ctl_table *table, int write,
-				void __user *buffer, size_t *length,
+				void *buffer, size_t *length,
 				loff_t *ppos);
 
 void tcp_enter_quickack_mode(struct sock *sk, unsigned int max_quickacks);
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index 3b7f98ef34a4..9787b935d6cd 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -47,7 +47,7 @@ static void set_tcp_default(void)
 
 /*sysctl handler for tcp_ack realted master control */
 int tcp_proc_delayed_ack_control(struct ctl_table *table, int write,
-				 void __user *buffer, size_t *length,
+				 void *buffer, size_t *length,
 				 loff_t *ppos)
 {
 	int ret = proc_dointvec_minmax(table, write, buffer, length, ppos);