2 files changed, 2 insertions, 4 deletions
diff --git a/tty.c b/tty.c
index 2af487d..048af68 100644
--- a/tty.c
+++ b/tty.c
@@ -970,10 +970,8 @@ void tty_flush __P ((void))
     tty_write_state.used = 0;
 }
 
-void tty_raw_write __P ((char *data, int len))
+void tty_raw_write __P ((char *data, size_t len))
 {
-    assert(len >= 0);
-
     if (len == 0) return;
 
     for (;;) {
diff --git a/tty.h b/tty.h
index 9ef4d0b..d29cb08 100644
--- a/tty.h
+++ b/tty.h
@@ -53,7 +53,7 @@ void tty_printf         __P ((const char *format, ...)) PRINTF_FUNCTION(1, 2);
 int  tty_read           __P ((char *buf, size_t count));
 void tty_gets           __P ((char *s, int size));
 void tty_flush          __P ((void));
-void tty_raw_write      __P ((char *data, int len));
+void tty_raw_write      __P ((char *data, size_t len));
 int  tty_has_chars      __P ((void));
 
 #endif /* USE_LOCALE */