diff --git a/dlls/msvcrt/wcs.c b/dlls/msvcrt/wcs.c
index e7bf0e45af4..a0b1cb6ce4b 100644
--- a/dlls/msvcrt/wcs.c
+++ b/dlls/msvcrt/wcs.c
@@ -74,8 +74,8 @@ MSVCRT_wchar_t* CDECL MSVCRT__wcsdup( const MSVCRT_wchar_t* str )
  */
 INT CDECL MSVCRT__wcsicoll( const MSVCRT_wchar_t* str1, const MSVCRT_wchar_t* str2 )
 {
-  /* FIXME: handle collates */
-  return strcmpiW( str1, str2 );
+    return CompareStringW(get_locinfo()->lc_handle[MSVCRT_LC_COLLATE],
+            NORM_IGNORECASE, str1, -1, str2, -1)-CSTR_EQUAL;
 }
 
 /*********************************************************************
@@ -83,8 +83,8 @@ INT CDECL MSVCRT__wcsicoll( const MSVCRT_wchar_t* str1, const MSVCRT_wchar_t* st
  */
 INT CDECL MSVCRT__wcsnicoll( const MSVCRT_wchar_t* str1, const MSVCRT_wchar_t* str2, MSVCRT_size_t count )
 {
-  /* FIXME: handle collates */
-  return strncmpiW( str1, str2, count );
+    return CompareStringW(get_locinfo()->lc_handle[MSVCRT_LC_COLLATE],
+            NORM_IGNORECASE, str1, count, str2, count)-CSTR_EQUAL;
 }
 
 /*********************************************************************
@@ -1010,8 +1010,8 @@ int CDECL MSVCRT_swprintf_p_l(MSVCRT_wchar_t *buffer, MSVCRT_size_t length,
  */
 int CDECL MSVCRT_wcscoll( const MSVCRT_wchar_t* str1, const MSVCRT_wchar_t* str2 )
 {
-  /* FIXME: handle collates */
-  return strcmpW( str1, str2 );
+    return CompareStringW(get_locinfo()->lc_handle[MSVCRT_LC_COLLATE],
+            0, str1, -1, str2, -1)-CSTR_EQUAL;
 }
 
 /*********************************************************************