diff --git a/proc.c b/proc.c
index ea2c8a31..fc8db304 100644
--- a/proc.c
+++ b/proc.c
@@ -161,12 +161,6 @@ proc_send(struct tmuxpeer *peer, enum msgtype type, int fd, const void *buf,
 	return (0);
 }
 
-int
-proc_send_s(struct tmuxpeer *peer, enum msgtype type, const char *s)
-{
-	return (proc_send(peer, type, -1, s, strlen(s) + 1));
-}
-
 struct tmuxproc *
 proc_start(const char *name, struct event_base *base, int forkflag,
     void (*signalcb)(int))
diff --git a/server-client.c b/server-client.c
index eee28883..d2ee6895 100644
--- a/server-client.c
+++ b/server-client.c
@@ -371,7 +371,7 @@ server_client_detach(struct client *c, enum msgtype msgtype)
 
 	c->flags |= CLIENT_DETACHING;
 	notify_client("client-detached", c);
-	proc_send_s(c->peer, msgtype, s->name);
+	proc_send(c->peer, msgtype, -1, s->name, strlen(s->name) + 1);
 }
 
 /* Execute command to replace a client. */
@@ -1721,7 +1721,7 @@ server_client_dispatch_shell(struct client *c)
 	shell = options_get_string(global_s_options, "default-shell");
 	if (*shell == '\0' || areshell(shell))
 		shell = _PATH_BSHELL;
-	proc_send_s(c->peer, MSG_SHELL, shell);
+	proc_send(c->peer, MSG_SHELL, -1, shell, strlen(shell) + 1);
 
 	proc_kill_peer(c->peer);
 }
diff --git a/server-fn.c b/server-fn.c
index ccec1b4a..1bd727d4 100644
--- a/server-fn.c
+++ b/server-fn.c
@@ -173,7 +173,7 @@ server_lock_client(struct client *c)
 	tty_raw(&c->tty, tty_term_string(c->tty.term, TTYC_E3));
 
 	c->flags |= CLIENT_SUSPENDED;
-	proc_send_s(c->peer, MSG_LOCK, cmd);
+	proc_send(c->peer, MSG_LOCK, -1, cmd, strlen(cmd) + 1);
 }
 
 void
diff --git a/tmux.h b/tmux.h
index ce666230..ec926d48 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1493,7 +1493,6 @@ const char	*find_home(void);
 /* proc.c */
 struct imsg;
 int	proc_send(struct tmuxpeer *, enum msgtype, int, const void *, size_t);
-int	proc_send_s(struct tmuxpeer *, enum msgtype, const char *);
 struct tmuxproc *proc_start(const char *, struct event_base *, int,
 	    void (*)(int));
 void	proc_loop(struct tmuxproc *, int (*)(void));