diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h
index 2cf446704cd4fce8c380d36df074f8822787b2e2..c06d63b3a58389b92483bb6a0f24f427324ac000 100644
--- a/include/linux/sched/signal.h
+++ b/include/linux/sched/signal.h
@@ -293,7 +293,6 @@ extern int kill_pid_info_as_cred(int, struct siginfo *, struct pid *,
 				const struct cred *, u32);
 extern int kill_pgrp(struct pid *pid, int sig, int priv);
 extern int kill_pid(struct pid *pid, int sig, int priv);
-extern int kill_proc_info(int, struct siginfo *, pid_t);
 extern __must_check bool do_notify_parent(struct task_struct *, int);
 extern void __wake_up_parent(struct task_struct *p, struct task_struct *parent);
 extern void force_sig(int, struct task_struct *);
diff --git a/kernel/signal.c b/kernel/signal.c
index 7e59ebc2c25e669ef60f54d6e3ae6839c34d2f2a..a8c54f384553e9a588399cc0db51a7eaef76e733 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1318,7 +1318,7 @@ int kill_pid_info(int sig, struct siginfo *info, struct pid *pid)
 	}
 }
 
-int kill_proc_info(int sig, struct siginfo *info, pid_t pid)
+static int kill_proc_info(int sig, struct siginfo *info, pid_t pid)
 {
 	int error;
 	rcu_read_lock();