diff --git a/dlls/msvcr100/msvcr100.spec b/dlls/msvcr100/msvcr100.spec
index 78af262d45f..f6783545a3d 100644
--- a/dlls/msvcr100/msvcr100.spec
+++ b/dlls/msvcr100/msvcr100.spec
@@ -1520,7 +1520,7 @@
 @ cdecl -ret64 _wcstoui64(wstr ptr long) MSVCRT__wcstoui64
 @ cdecl -ret64 _wcstoui64_l(wstr ptr long ptr) MSVCRT__wcstoui64_l
 @ cdecl _wcstoul_l(wstr ptr long ptr) MSVCRT__wcstoul_l
-@ cdecl _wcsupr(wstr) ntdll._wcsupr
+@ cdecl _wcsupr(wstr) MSVCRT__wcsupr
 @ cdecl _wcsupr_l(wstr ptr) MSVCRT__wcsupr_l
 @ cdecl _wcsupr_s(wstr long) MSVCRT__wcsupr_s
 @ cdecl _wcsupr_s_l(wstr long ptr) MSVCRT__wcsupr_s_l
diff --git a/dlls/msvcr110/msvcr110.spec b/dlls/msvcr110/msvcr110.spec
index d944012701c..58d51f76c47 100644
--- a/dlls/msvcr110/msvcr110.spec
+++ b/dlls/msvcr110/msvcr110.spec
@@ -1878,7 +1878,7 @@
 @ cdecl -ret64 _wcstoui64(wstr ptr long) MSVCRT__wcstoui64
 @ cdecl -ret64 _wcstoui64_l(wstr ptr long ptr) MSVCRT__wcstoui64_l
 @ cdecl _wcstoul_l(wstr ptr long ptr) MSVCRT__wcstoul_l
-@ cdecl _wcsupr(wstr) ntdll._wcsupr
+@ cdecl _wcsupr(wstr) MSVCRT__wcsupr
 @ cdecl _wcsupr_l(wstr ptr) MSVCRT__wcsupr_l
 @ cdecl _wcsupr_s(wstr long) MSVCRT__wcsupr_s
 @ cdecl _wcsupr_s_l(wstr long ptr) MSVCRT__wcsupr_s_l
diff --git a/dlls/msvcr120/msvcr120.spec b/dlls/msvcr120/msvcr120.spec
index b5b273d2828..f2a9ed0f9cc 100644
--- a/dlls/msvcr120/msvcr120.spec
+++ b/dlls/msvcr120/msvcr120.spec
@@ -1902,7 +1902,7 @@
 @ cdecl _wcstoul_l(wstr ptr long ptr) MSVCRT__wcstoul_l
 @ cdecl -ret64 _wcstoull_l(wstr ptr long ptr) MSVCRT__wcstoui64_l
 @ stub _wcstoumax_l
-@ cdecl _wcsupr(wstr) ntdll._wcsupr
+@ cdecl _wcsupr(wstr) MSVCRT__wcsupr
 @ cdecl _wcsupr_l(wstr ptr) MSVCRT__wcsupr_l
 @ cdecl _wcsupr_s(wstr long) MSVCRT__wcsupr_s
 @ cdecl _wcsupr_s_l(wstr long ptr) MSVCRT__wcsupr_s_l
diff --git a/dlls/msvcr70/msvcr70.spec b/dlls/msvcr70/msvcr70.spec
index aad93a75fe2..b9a4f4d5bdc 100644
--- a/dlls/msvcr70/msvcr70.spec
+++ b/dlls/msvcr70/msvcr70.spec
@@ -607,7 +607,7 @@
 @ cdecl _wcsset(wstr long) MSVCRT__wcsset
 @ cdecl -ret64 _wcstoi64(wstr ptr long) MSVCRT__wcstoi64
 @ cdecl -ret64 _wcstoui64(wstr ptr long) MSVCRT__wcstoui64
-@ cdecl _wcsupr(wstr) ntdll._wcsupr
+@ cdecl _wcsupr(wstr) MSVCRT__wcsupr
 @ cdecl _wctime(ptr) MSVCRT__wctime
 @ cdecl _wctime64(ptr) MSVCRT__wctime64
 # extern _wctype
diff --git a/dlls/msvcr71/msvcr71.spec b/dlls/msvcr71/msvcr71.spec
index 19273767002..e6906999edd 100644
--- a/dlls/msvcr71/msvcr71.spec
+++ b/dlls/msvcr71/msvcr71.spec
@@ -603,7 +603,7 @@
 @ cdecl _wcsset(wstr long) MSVCRT__wcsset
 @ cdecl -ret64 _wcstoi64(wstr ptr long) MSVCRT__wcstoi64
 @ cdecl -ret64 _wcstoui64(wstr ptr long) MSVCRT__wcstoui64
-@ cdecl _wcsupr(wstr) ntdll._wcsupr
+@ cdecl _wcsupr(wstr) MSVCRT__wcsupr
 @ cdecl _wctime(ptr) MSVCRT__wctime
 @ cdecl _wctime64(ptr) MSVCRT__wctime64
 # extern _wctype
diff --git a/dlls/msvcr80/msvcr80.spec b/dlls/msvcr80/msvcr80.spec
index 703bf85f8e8..cb4b6d9f4e0 100644
--- a/dlls/msvcr80/msvcr80.spec
+++ b/dlls/msvcr80/msvcr80.spec
@@ -1199,7 +1199,7 @@
 @ cdecl -ret64 _wcstoui64(wstr ptr long) MSVCRT__wcstoui64
 @ cdecl -ret64 _wcstoui64_l(wstr ptr long ptr) MSVCRT__wcstoui64_l
 @ cdecl _wcstoul_l(wstr ptr long ptr) MSVCRT__wcstoul_l
-@ cdecl _wcsupr(wstr) ntdll._wcsupr
+@ cdecl _wcsupr(wstr) MSVCRT__wcsupr
 @ cdecl _wcsupr_l(wstr ptr) MSVCRT__wcsupr_l
 @ cdecl _wcsupr_s(wstr long) MSVCRT__wcsupr_s
 @ cdecl _wcsupr_s_l(wstr long ptr) MSVCRT__wcsupr_s_l
diff --git a/dlls/msvcr90/msvcr90.spec b/dlls/msvcr90/msvcr90.spec
index 9b86c534a35..cf33b432f6a 100644
--- a/dlls/msvcr90/msvcr90.spec
+++ b/dlls/msvcr90/msvcr90.spec
@@ -1175,7 +1175,7 @@
 @ cdecl -ret64 _wcstoui64(wstr ptr long) MSVCRT__wcstoui64
 @ cdecl -ret64 _wcstoui64_l(wstr ptr long ptr) MSVCRT__wcstoui64_l
 @ cdecl _wcstoul_l(wstr ptr long ptr) MSVCRT__wcstoul_l
-@ cdecl _wcsupr(wstr) ntdll._wcsupr
+@ cdecl _wcsupr(wstr) MSVCRT__wcsupr
 @ cdecl _wcsupr_l(wstr ptr) MSVCRT__wcsupr_l
 @ cdecl _wcsupr_s(wstr long) MSVCRT__wcsupr_s
 @ cdecl _wcsupr_s_l(wstr long ptr) MSVCRT__wcsupr_s_l
diff --git a/dlls/msvcrt/msvcrt.spec b/dlls/msvcrt/msvcrt.spec
index a08093ae997..83a33f313fb 100644
--- a/dlls/msvcrt/msvcrt.spec
+++ b/dlls/msvcrt/msvcrt.spec
@@ -1130,7 +1130,7 @@
 @ cdecl -ret64 _wcstoui64(wstr ptr long) MSVCRT__wcstoui64
 @ cdecl -ret64 _wcstoui64_l(wstr ptr long ptr) MSVCRT__wcstoui64_l
 @ cdecl _wcstoul_l(wstr ptr long ptr) MSVCRT__wcstoul_l
-@ cdecl _wcsupr(wstr) ntdll._wcsupr
+@ cdecl _wcsupr(wstr) MSVCRT__wcsupr
 @ cdecl _wcsupr_l(wstr ptr) MSVCRT__wcsupr_l
 @ cdecl _wcsupr_s(wstr long) MSVCRT__wcsupr_s
 @ cdecl _wcsupr_s_l(wstr long ptr) MSVCRT__wcsupr_s_l
diff --git a/dlls/msvcrt/wcs.c b/dlls/msvcrt/wcs.c
index c2a44748d60..0e4019fd791 100644
--- a/dlls/msvcrt/wcs.c
+++ b/dlls/msvcrt/wcs.c
@@ -267,6 +267,14 @@ MSVCRT_wchar_t* CDECL MSVCRT__wcsupr_l( MSVCRT_wchar_t *str, MSVCRT__locale_t lo
     return str;
 }
 
+/******************************************************************
+ *              _wcsupr (MSVCRT.@)
+ */
+MSVCRT_wchar_t* CDECL MSVCRT__wcsupr( MSVCRT_wchar_t *str )
+{
+    return MSVCRT__wcsupr_l(str, NULL);
+}
+
 /******************************************************************
  *		_wcslwr_s_l (MSVCRT.@)
  */
diff --git a/dlls/ucrtbase/ucrtbase.spec b/dlls/ucrtbase/ucrtbase.spec
index 0cec3904a99..03d34a9c805 100644
--- a/dlls/ucrtbase/ucrtbase.spec
+++ b/dlls/ucrtbase/ucrtbase.spec
@@ -2051,7 +2051,7 @@
 @ cdecl _wcstoul_l(wstr ptr long ptr) MSVCRT__wcstoul_l
 @ cdecl -ret64 _wcstoull_l(wstr ptr long ptr) MSVCRT__wcstoui64_l
 @ stub _wcstoumax_l
-@ cdecl _wcsupr(wstr) ntdll._wcsupr
+@ cdecl _wcsupr(wstr) MSVCRT__wcsupr
 @ cdecl _wcsupr_l(wstr ptr) MSVCRT__wcsupr_l
 @ cdecl _wcsupr_s(wstr long) MSVCRT__wcsupr_s
 @ cdecl _wcsupr_s_l(wstr long ptr) MSVCRT__wcsupr_s_l