diff --git a/dlls/msvcr80/msvcr80.spec b/dlls/msvcr80/msvcr80.spec
index d872571cd40..04535b38bd0 100644
--- a/dlls/msvcr80/msvcr80.spec
+++ b/dlls/msvcr80/msvcr80.spec
@@ -148,7 +148,7 @@
 @ cdecl __crtCompareStringA(long long str long str long) msvcrt.__crtCompareStringA
 @ cdecl __crtCompareStringW(long long wstr long wstr long) msvcrt.__crtCompareStringW
 @ cdecl __crtGetLocaleInfoW(long long ptr long) msvcrt.__crtGetLocaleInfoW
-@ stub __crtGetStringTypeW
+@ cdecl __crtGetStringTypeW(long long wstr long ptr) msvcrt.__crtGetStringTypeW
 @ cdecl __crtLCMapStringA(long long str long ptr long long long) msvcrt.__crtLCMapStringA
 @ stub __crtLCMapStringW
 @ stub __daylight
diff --git a/dlls/msvcr90/msvcr90.spec b/dlls/msvcr90/msvcr90.spec
index 75740ecfadc..ae13be471b7 100644
--- a/dlls/msvcr90/msvcr90.spec
+++ b/dlls/msvcr90/msvcr90.spec
@@ -145,7 +145,7 @@
 @ cdecl __crtCompareStringA(long long str long str long) msvcrt.__crtCompareStringA
 @ cdecl __crtCompareStringW(long long wstr long wstr long) msvcrt.__crtCompareStringW
 @ cdecl __crtGetLocaleInfoW(long long ptr long) msvcrt.__crtGetLocaleInfoW
-@ stub __crtGetStringTypeW
+@ cdecl __crtGetStringTypeW(long long wstr long ptr) msvcrt.__crtGetStringTypeW
 @ cdecl __crtLCMapStringA(long long str long ptr long long long) msvcrt.__crtLCMapStringA
 @ stub __crtLCMapStringW
 @ stub __daylight
diff --git a/dlls/msvcrt/locale.c b/dlls/msvcrt/locale.c
index fe369766c09..fe77b83ba64 100644
--- a/dlls/msvcrt/locale.c
+++ b/dlls/msvcrt/locale.c
@@ -54,6 +54,7 @@ unsigned char charmax = CHAR_MAX;
 #define UNLOCK_LOCALE _munlock(_SETLOCALE_LOCK);
 
 #define MSVCRT_LEADBYTE  0x8000
+#define MSVCRT_C1_DEFINED 0x200
 
 /* Friendly country strings & iso codes for synonym support.
  * Based on MS documentation for setlocale().
@@ -457,6 +458,21 @@ int CDECL __crtGetLocaleInfoW( LCID lcid, LCTYPE type, MSVCRT_wchar_t *buffer, i
     return GetLocaleInfoW( lcid, type, buffer, len );
 }
 
+/*********************************************************************
+ *              __crtGetStringTypeW(MSVCRT.@)
+ *
+ * This function was accepting different number of arguments in older
+ * versions of msvcrt.
+ */
+BOOL CDECL __crtGetStringTypeW(DWORD unk, DWORD type,
+        MSVCRT_wchar_t *buffer, int len, WORD *out)
+{
+    FIXME("(unk %x, type %x, wstr %p(%d), %p) partial stub\n",
+            unk, type, buffer, len, out);
+
+    return GetStringTypeW(type, buffer, len, out);
+}
+
 /*********************************************************************
  *		localeconv (MSVCRT.@)
  */
diff --git a/dlls/msvcrt/msvcrt.spec b/dlls/msvcrt/msvcrt.spec
index dffd74981e5..f4f9ee8af1c 100644
--- a/dlls/msvcrt/msvcrt.spec
+++ b/dlls/msvcrt/msvcrt.spec
@@ -138,7 +138,7 @@
 @ cdecl __crtCompareStringA(long long str long str long)
 @ cdecl __crtCompareStringW(long long wstr long wstr long)
 @ cdecl __crtGetLocaleInfoW(long long ptr long)
-# stub __crtGetStringTypeW
+@ cdecl __crtGetStringTypeW(long long wstr long ptr)
 @ cdecl __crtLCMapStringA(long long str long ptr long long long)
 # stub __crtLCMapStringW
 # stub __daylight