diff --git a/server.c b/server.c
index 504269ea..4afab67d 100644
--- a/server.c
+++ b/server.c
@@ -116,19 +116,6 @@ server_create_client(int fd)
 	log_debug("new client %d", fd);
 }
 
-/* Find client index. */
-int
-server_client_index(struct client *c)
-{
-	u_int	i;
-
-	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
-		if (c == ARRAY_ITEM(&clients, i))
-			return (i);
-	}
-	return (-1);
-}
-
 /* Fork new server. */
 int
 server_start(char *path)
diff --git a/tmux.h b/tmux.h
index ed7242c5..63f75577 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1435,7 +1435,6 @@ const char *key_string_lookup_key(int);
 /* server.c */
 extern struct clients clients;
 extern struct clients dead_clients;
-int	 server_client_index(struct client *);
 int	 server_start(char *);
 
 /* server-msg.c */