diff --git a/mingw-w64-headers/crt/sec_api/string_s.h b/mingw-w64-headers/crt/sec_api/string_s.h
index feca257..40801ff 100644
--- a/mingw-w64-headers/crt/sec_api/string_s.h
+++ b/mingw-w64-headers/crt/sec_api/string_s.h
@@ -87,9 +87,9 @@
   _CRTIMP errno_t __cdecl _wcsncpy_s_l(wchar_t *_Dst, size_t _DstSizeInChars, const wchar_t *_Src, size_t _MaxCount, _locale_t _Locale);
   __DEFINE_CPP_OVERLOAD_SECURE_FUNC_0_3(errno_t, _wcsncpy_s_l, wchar_t, _Dest, const wchar_t *, _Source, size_t, _MaxCount, _locale_t, _Locale);
   _CRTIMP wchar_t *__cdecl _wcstok_s_l(wchar_t *_Str,const wchar_t *_Delim,wchar_t **_Context,_locale_t _Locale);
-  _CRTIMP errno_t __cdecl _wcsset_s_l(wchar_t *_Str,size_t _SizeInChars,unsigned int _Val,_locale_t _Locale);
+  _CRTIMP errno_t __cdecl _wcsset_s_l(wchar_t *_Str,size_t _SizeInChars,wchar_t _Val,_locale_t _Locale);
   __DEFINE_CPP_OVERLOAD_SECURE_FUNC_0_2(errno_t, _wcsset_s_l, wchar_t, _Str, wchar_t, _Val, _locale_t, _Locale)
-  _CRTIMP errno_t __cdecl _wcsnset_s_l(wchar_t *_Str,size_t _SizeInChars,unsigned int _Val, size_t _Count,_locale_t _Locale);
+  _CRTIMP errno_t __cdecl _wcsnset_s_l(wchar_t *_Str,size_t _SizeInChars,wchar_t _Val, size_t _Count,_locale_t _Locale);
   __DEFINE_CPP_OVERLOAD_SECURE_FUNC_0_3(errno_t, _wcsnset_s_l, wchar_t, _Str, wchar_t, _Val, size_t, _Count, _locale_t, _Locale)
 
   __forceinline size_t __cdecl wcsnlen_s(const wchar_t * _src, size_t _count) {
diff --git a/mingw-w64-headers/crt/sec_api/wchar_s.h b/mingw-w64-headers/crt/sec_api/wchar_s.h
index b21fa43..c4dffe4 100644
--- a/mingw-w64-headers/crt/sec_api/wchar_s.h
+++ b/mingw-w64-headers/crt/sec_api/wchar_s.h
@@ -324,9 +324,9 @@
   _CRTIMP errno_t __cdecl _wcsncpy_s_l(wchar_t *_Dst,size_t _DstSizeInChars,const wchar_t *_Src,size_t _MaxCount,_locale_t _Locale);
   __DEFINE_CPP_OVERLOAD_SECURE_FUNC_0_3(errno_t, _wcsncpy_s_l, wchar_t, _Dst, const wchar_t *, _Src, size_t, _MaxCount, _locale_t, _Locale)
   _CRTIMP wchar_t *__cdecl _wcstok_s_l(wchar_t *_Str,const wchar_t *_Delim,wchar_t **_Context,_locale_t _Locale);
-  _CRTIMP errno_t __cdecl _wcsset_s_l(wchar_t *_Str,size_t _SizeInChars,unsigned int _Val,_locale_t _Locale);
+  _CRTIMP errno_t __cdecl _wcsset_s_l(wchar_t *_Str,size_t _SizeInChars,wchar_t _Val,_locale_t _Locale);
   __DEFINE_CPP_OVERLOAD_SECURE_FUNC_0_2(errno_t, _wcsset_s_l, wchar_t, _Str, wchar_t, _Val, _locale_t, _Locale)
-  _CRTIMP errno_t __cdecl _wcsnset_s_l(wchar_t *_Str,size_t _SizeInChars,unsigned int _Val, size_t _Count,_locale_t _Locale);
+  _CRTIMP errno_t __cdecl _wcsnset_s_l(wchar_t *_Str,size_t _SizeInChars,wchar_t _Val, size_t _Count,_locale_t _Locale);
   __DEFINE_CPP_OVERLOAD_SECURE_FUNC_0_3(errno_t, _wcsnset_s_l, wchar_t, _Str, wchar_t, _Val, size_t, _Count, _locale_t, _Locale)
 
   __forceinline size_t __cdecl wcsnlen_s(const wchar_t * _src, size_t _count) {