diff --git a/dll/win32/advapi32/reg/reg.c b/dll/win32/advapi32/reg/reg.c
index 8ca0927d678..75c37217e72 100644
--- a/dll/win32/advapi32/reg/reg.c
+++ b/dll/win32/advapi32/reg/reg.c
@@ -2166,6 +2166,7 @@ RegGetValueA(HKEY hKey,
     return ret;
 }
 
+#endif // _ADVAPI32_VISTA_
 
 /************************************************************************
  *  RegSetKeyValueW
@@ -2236,6 +2237,7 @@ Cleanup:
     return Ret;
 }
 
+#ifndef _ADVAPI32_VISTA_
 
 /************************************************************************
  *  RegSetKeyValueA
diff --git a/dll/win32/advapi32_vista/CMakeLists.txt b/dll/win32/advapi32_vista/CMakeLists.txt
index 4cb29d3844f..add67945a36 100644
--- a/dll/win32/advapi32_vista/CMakeLists.txt
+++ b/dll/win32/advapi32_vista/CMakeLists.txt
@@ -13,7 +13,6 @@ include_directories(
 list(APPEND SOURCE
     DllMain.c
     ../advapi32/reg/reg.c
-    RegSetKeyValue.c
     RegLoadMUIString.c
     ${CMAKE_CURRENT_BINARY_DIR}/advapi32_vista.def)
 
diff --git a/dll/win32/advapi32_vista/RegSetKeyValue.c b/dll/win32/advapi32_vista/RegSetKeyValue.c
deleted file mode 100644
index 8701eb87df4..00000000000
--- a/dll/win32/advapi32_vista/RegSetKeyValue.c
+++ /dev/null
@@ -1,25 +0,0 @@
-
-#include "advapi32_vista.h"
-
-/* Taken from Wine advapi32/registry.c */
-
-/******************************************************************************
- * RegSetKeyValueW   [ADVAPI32.@]
- */
-LONG WINAPI RegSetKeyValueW( HKEY hkey, LPCWSTR subkey, LPCWSTR name, DWORD type, const void *data, DWORD len )
-{
-    HKEY hsubkey = NULL;
-    DWORD ret;
-
-    //TRACE("(%p,%s,%s,%d,%p,%d)\n", hkey, debugstr_w(subkey), debugstr_w(name), type, data, len );
-
-    if (subkey && subkey[0])  /* need to create the subkey */
-    {
-        if ((ret = RegCreateKeyW( hkey, subkey, &hsubkey )) != ERROR_SUCCESS) return ret;
-        hkey = hsubkey;
-    }
-
-    ret = RegSetValueExW( hkey, name, 0, type, (const BYTE*)data, len );
-    if (hsubkey) RegCloseKey( hsubkey );
-    return ret;
-}