diff --git a/src/os/windows/win32.cpp b/src/os/windows/win32.cpp
--- a/src/os/windows/win32.cpp
+++ b/src/os/windows/win32.cpp
@@ -629,9 +629,12 @@ wchar_t *convert_to_fs(const char *name,
 /** Determine the current user's locale. */
 const char *GetCurrentLocale(const char *)
 {
+	const LANGID userUiLang = GetUserDefaultUILanguage();
+	const LCID userUiLocale = MAKELCID(userUiLang, SORT_DEFAULT);
+
 	char lang[9], country[9];
-	if (GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_SISO639LANGNAME, lang, lengthof(lang)) == 0 ||
-	    GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_SISO3166CTRYNAME, country, lengthof(country)) == 0) {
+	if (GetLocaleInfoA(userUiLocale, LOCALE_SISO639LANGNAME, lang, lengthof(lang)) == 0 ||
+	    GetLocaleInfoA(userUiLocale, LOCALE_SISO3166CTRYNAME, country, lengthof(country)) == 0) {
 		/* Unable to retrieve the locale. */
 		return nullptr;
 	}