diff --git a/headers/posix/wctype.h b/headers/posix/wctype.h
index c63b716308..bb0cfaeb73 100644
--- a/headers/posix/wctype.h
+++ b/headers/posix/wctype.h
@@ -14,20 +14,8 @@ typedef int wctrans_t;
 extern "C" {
 #endif
 
-extern int		iswalnum(wint_t wc);
-extern int		iswalpha(wint_t wc);
 extern int		iswblank(wint_t wc);
-extern int		iswcntrl(wint_t wc);
-extern int		iswdigit(wint_t wc);
-extern int		iswgraph(wint_t wc);
-extern int		iswlower(wint_t wc);
-extern int		iswprint(wint_t wc);
-extern int		iswpunct(wint_t wc);
-extern int		iswspace(wint_t wc);
-extern int		iswupper(wint_t wc);
-extern int		iswxdigit(wint_t wc);
 
-extern int		iswctype(wint_t wc, wctype_t charClass);
 extern wint_t	towctrans(wint_t wc, wctrans_t transition);
 extern wint_t	towlower(wint_t wc);
 extern wint_t	towupper(wint_t wc);