diff --git a/include/winnls.h b/include/winnls.h
index 7475f97051f..c8580bd67c2 100644
--- a/include/winnls.h
+++ b/include/winnls.h
@@ -169,10 +169,12 @@ extern "C" {
 #define LOCALE_USE_CP_ACP             0x40000000
 #define LOCALE_RETURN_NUMBER          0x20000000
 #define LOCALE_RETURN_GENITIVE_NAMES  0x10000000
+#define LOCALE_ALLOW_NEUTRAL_NAMES    0x08000000
 
 /* Locale information types */
 #define LOCALE_ILANGUAGE            0x0001
 #define LOCALE_SLANGUAGE            0x0002
+#define LOCALE_SLOCALIZEDDISPLAYNAME 0x0002
 #define LOCALE_SENGLANGUAGE         0x1001
 #define LOCALE_SENGLISHLANGUAGENAME 0x1001
 #define LOCALE_SABBREVLANGNAME      0x0003