diff --git a/telegram-purple.c b/telegram-purple.c
index 5e762a4..31dd775 100644
--- a/telegram-purple.c
+++ b/telegram-purple.c
@@ -33,8 +33,6 @@ static void update_user_typing (struct tgl_state *TLS, struct tgl_user *U, enum
 static void update_marked_read (struct tgl_state *TLS, int num, struct tgl_message *list[]);
 static void update_on_logged_in (struct tgl_state *TLS);
 static void update_on_ready (struct tgl_state *TLS);
-static char *format_print_name (struct tgl_state *TLS, tgl_peer_id_t id, const char *a1, const char *a2, const char *a3,
-    const char *a4);
 static void on_user_get_info (struct tgl_state *TLS, void *info_data, int success, struct tgl_user *U);
 
 const char *config_dir = "telegram-purple";