diff --git a/dlls/msvcrt/msvcrt.spec b/dlls/msvcrt/msvcrt.spec
index 278932e3591..c81f6284e11 100644
--- a/dlls/msvcrt/msvcrt.spec
+++ b/dlls/msvcrt/msvcrt.spec
@@ -1453,8 +1453,8 @@
 # stub tmpnam_s(ptr long)
 @ cdecl tolower(long) MSVCRT_tolower
 @ cdecl toupper(long) MSVCRT_toupper
-@ cdecl towlower(long) ntdll.towlower
-@ cdecl towupper(long) ntdll.towupper
+@ cdecl towlower(long) MSVCRT_towlower
+@ cdecl towupper(long) MSVCRT_towupper
 @ cdecl ungetc(long ptr) MSVCRT_ungetc
 @ cdecl ungetwc(long ptr) MSVCRT_ungetwc
 # stub utime
diff --git a/dlls/msvcrt/wcs.c b/dlls/msvcrt/wcs.c
index b0a52d7a596..1968a2a0a5c 100644
--- a/dlls/msvcrt/wcs.c
+++ b/dlls/msvcrt/wcs.c
@@ -1591,6 +1591,14 @@ int CDECL MSVCRT__towupper_l(MSVCRT_wint_t c, MSVCRT__locale_t locale)
     return toupperW(c);
 }
 
+/*********************************************************************
+ *              towupper (MSVCRT.@)
+ */
+int CDECL MSVCRT_towupper(MSVCRT_wint_t c)
+{
+    return MSVCRT__towupper_l(c, NULL);
+}
+
 /*********************************************************************
  *              _towlower_l (MSVCRT.@)
  */
@@ -1598,3 +1606,11 @@ int CDECL MSVCRT__towlower_l(MSVCRT_wint_t c, MSVCRT__locale_t locale)
 {
     return tolowerW(c);
 }
+
+/*********************************************************************
+ *              towlower (MSVCRT.@)
+ */
+int CDECL MSVCRT_towlower(MSVCRT_wint_t c)
+{
+    return MSVCRT__towlower_l(c, NULL);
+}