diff --git a/newlib/libc/include/wchar.h b/newlib/libc/include/wchar.h
index c04a6510e..0d3e636f9 100644
--- a/newlib/libc/include/wchar.h
+++ b/newlib/libc/include/wchar.h
@@ -248,8 +248,8 @@ int _fputws_unlocked_r (struct _reent *, const wchar_t *, __FILE *);
 int _fwide_r (struct _reent *, __FILE *, int);
 wint_t _getwc_r (struct _reent *, __FILE *);
 wint_t _getwc_unlocked_r (struct _reent *, __FILE *);
-wint_t _getwchar_r (struct _reent *ptr);
-wint_t _getwchar_unlocked_r (struct _reent *ptr);
+wint_t _getwchar_r (struct _reent *);
+wint_t _getwchar_unlocked_r (struct _reent *);
 wint_t _putwc_r (struct _reent *, wchar_t, __FILE *);
 wint_t _putwc_unlocked_r (struct _reent *, wchar_t, __FILE *);
 wint_t _putwchar_r (struct _reent *, wchar_t);