diff --git a/dlls/kernel32/kernel32.spec b/dlls/kernel32/kernel32.spec
index c5518ce9d7..5906ca3fe3 100644
--- a/dlls/kernel32/kernel32.spec
+++ b/dlls/kernel32/kernel32.spec
@@ -634,6 +634,7 @@
 @ stdcall GetStringTypeW(long wstr long ptr)
 @ stdcall GetSystemDefaultLCID()
 @ stdcall GetSystemDefaultLangID()
+@ stdcall GetSystemDefaultLocaleName(ptr long)
 @ stdcall GetSystemDefaultUILanguage()
 @ stdcall GetSystemDEPPolicy()
 @ stdcall GetSystemDirectoryA(ptr long)
diff --git a/dlls/kernel32/locale.c b/dlls/kernel32/locale.c
index d627bdb226..ac708c31d9 100644
--- a/dlls/kernel32/locale.c
+++ b/dlls/kernel32/locale.c
@@ -931,6 +931,14 @@ LCID WINAPI GetSystemDefaultLCID(void)
     return lcid;
 }
 
+/***********************************************************************
+ *		GetSystemDefaultLocaleName (KERNEL32.@)
+ */
+INT WINAPI GetSystemDefaultLocaleName(LPWSTR localename, INT len)
+{
+    LCID lcid = GetSystemDefaultLCID();
+    return LCIDToLocaleName(lcid, localename, len, 0);
+}
 
 /***********************************************************************
  *		GetUserDefaultUILanguage (KERNEL32.@)