diff --git a/tgetpass.c b/tgetpass.c
index 31336439f..ab1b8adcc 100644
--- a/tgetpass.c
+++ b/tgetpass.c
@@ -66,6 +66,10 @@ static void handler __P((int));
 static char *getln __P((int, char *, size_t, int));
 static char *sudo_askpass __P((const char *));
 
+extern int term_restore __P((int));
+extern int term_noecho __P((int));
+extern int term_raw __P((int));
+
 /*
  * Like getpass(3) but with timeout and echo flags.
  */