diff -urNp a/braille_tsi.c b/braille_tsi.c
--- a/braille_tsi.c 2022-03-08 13:31:31.054957126 +0100
+++ b/braille_tsi.c 2022-03-08 13:32:02.888173116 +0100
@@ -49,7 +49,7 @@ static int tsi_line_type; /* indicates
static int display_status_tsi __P((void));
static int write_line_tsi __P((char*, int, int));
-static void buttonpress_tsi __P((structkey2rc*));
+static void buttonpress_tsi __P((struct key2rc*));
static void buttonpress_navigator_40 __P((void));
static void buttonpress_powerbraille_40 __P((void));
static void buttonpress_powerbraille_80 __P((void));