diff --git a/binding-sandbox/binding-sandbox.cpp b/binding-sandbox/binding-sandbox.cpp
index 5f65732f..5de1ea5d 100644
--- a/binding-sandbox/binding-sandbox.cpp
+++ b/binding-sandbox/binding-sandbox.cpp
@@ -323,41 +323,41 @@ static VALUE user_language(VALUE self) {
         language = RETRO_LANGUAGE_ENGLISH;
     }
     switch (language) {
-        default: case RETRO_LANGUAGE_ENGLISH: str = "en_US.UTF-8"; break;
-        case RETRO_LANGUAGE_JAPANESE: str = "ja_JP.UTF-8"; break;
-        case RETRO_LANGUAGE_FRENCH: str = "fr_FR.UTF-8"; break;
-        case RETRO_LANGUAGE_SPANISH: str = "es_ES.UTF-8"; break;
-        case RETRO_LANGUAGE_GERMAN: str = "de_DE.UTF-8"; break;
-        case RETRO_LANGUAGE_ITALIAN: str = "it_IT.UTF-8"; break;
-        case RETRO_LANGUAGE_DUTCH: str = "nl_NL.UTF-8"; break;
-        case RETRO_LANGUAGE_PORTUGUESE_BRAZIL: str = "pt_BR.UTF-8"; break;
-        case RETRO_LANGUAGE_PORTUGUESE_PORTUGAL: str = "pt_PT.UTF-8"; break;
-        case RETRO_LANGUAGE_RUSSIAN: str = "ru_RU.UTF-8"; break;
-        case RETRO_LANGUAGE_KOREAN: str = "ko_KR.UTF-8"; break;
-        case RETRO_LANGUAGE_CHINESE_TRADITIONAL: str = "zh_TW.UTF-8"; break;
-        case RETRO_LANGUAGE_CHINESE_SIMPLIFIED: str = "zh_CN.UTF-8"; break;
-        case RETRO_LANGUAGE_ESPERANTO: str = "eo.UTF-8"; break;
-        case RETRO_LANGUAGE_POLISH: str = "pl_PL.UTF-8"; break;
-        case RETRO_LANGUAGE_VIETNAMESE: str = "vi_VN.UTF-8"; break;
-        case RETRO_LANGUAGE_ARABIC: str = "ar_SA.UTF-8"; break;
-        case RETRO_LANGUAGE_GREEK: str = "el_GR.UTF-8"; break;
-        case RETRO_LANGUAGE_TURKISH: str = "tr_TR.UTF-8"; break;
-        case RETRO_LANGUAGE_SLOVAK: str = "sk_SK.UTF-8"; break;
-        case RETRO_LANGUAGE_PERSIAN: str = "fa_IR.UTF-8"; break;
-        case RETRO_LANGUAGE_HEBREW: str = "he_IL.UTF-8"; break;
-        case RETRO_LANGUAGE_ASTURIAN: str = "ast_ES.UTF-8"; break;
-        case RETRO_LANGUAGE_FINNISH: str = "fi_FI.UTF-8"; break;
-        case RETRO_LANGUAGE_INDONESIAN: str = "id_ID.UTF-8"; break;
-        case RETRO_LANGUAGE_SWEDISH: str = "sv_SE.UTF-8"; break;
-        case RETRO_LANGUAGE_UKRAINIAN: str = "uk_UA.UTF-8"; break;
-        case RETRO_LANGUAGE_CZECH: str = "cs_CZ.UTF-8"; break;
-        case RETRO_LANGUAGE_CATALAN_VALENCIA: str = "ca_ES.UTF-8"; break;
-        case RETRO_LANGUAGE_CATALAN: str = "ca_AD.UTF-8"; break;
-        case RETRO_LANGUAGE_BRITISH_ENGLISH: str = "en_GB.UTF-8"; break;
-        case RETRO_LANGUAGE_HUNGARIAN: str = "hu_HU.UTF-8"; break;
-        case RETRO_LANGUAGE_BELARUSIAN: str = "be_BY.UTF-8"; break;
-        case RETRO_LANGUAGE_GALICIAN: str = "gl_ES.UTF-8"; break;
-        case RETRO_LANGUAGE_NORWEGIAN: str = "no_NO.UTF-8"; break;
+        default: case RETRO_LANGUAGE_ENGLISH: str = "en_US"; break;
+        case RETRO_LANGUAGE_JAPANESE: str = "ja_JP"; break;
+        case RETRO_LANGUAGE_FRENCH: str = "fr_FR"; break;
+        case RETRO_LANGUAGE_SPANISH: str = "es_ES"; break;
+        case RETRO_LANGUAGE_GERMAN: str = "de_DE"; break;
+        case RETRO_LANGUAGE_ITALIAN: str = "it_IT"; break;
+        case RETRO_LANGUAGE_DUTCH: str = "nl_NL"; break;
+        case RETRO_LANGUAGE_PORTUGUESE_BRAZIL: str = "pt_BR"; break;
+        case RETRO_LANGUAGE_PORTUGUESE_PORTUGAL: str = "pt_PT"; break;
+        case RETRO_LANGUAGE_RUSSIAN: str = "ru_RU"; break;
+        case RETRO_LANGUAGE_KOREAN: str = "ko_KR"; break;
+        case RETRO_LANGUAGE_CHINESE_TRADITIONAL: str = "zh_TW"; break;
+        case RETRO_LANGUAGE_CHINESE_SIMPLIFIED: str = "zh_CN"; break;
+        case RETRO_LANGUAGE_ESPERANTO: str = "eo"; break;
+        case RETRO_LANGUAGE_POLISH: str = "pl_PL"; break;
+        case RETRO_LANGUAGE_VIETNAMESE: str = "vi_VN"; break;
+        case RETRO_LANGUAGE_ARABIC: str = "ar_SA"; break;
+        case RETRO_LANGUAGE_GREEK: str = "el_GR"; break;
+        case RETRO_LANGUAGE_TURKISH: str = "tr_TR"; break;
+        case RETRO_LANGUAGE_SLOVAK: str = "sk_SK"; break;
+        case RETRO_LANGUAGE_PERSIAN: str = "fa_IR"; break;
+        case RETRO_LANGUAGE_HEBREW: str = "he_IL"; break;
+        case RETRO_LANGUAGE_ASTURIAN: str = "ast_ES"; break;
+        case RETRO_LANGUAGE_FINNISH: str = "fi_FI"; break;
+        case RETRO_LANGUAGE_INDONESIAN: str = "id_ID"; break;
+        case RETRO_LANGUAGE_SWEDISH: str = "sv_SE"; break;
+        case RETRO_LANGUAGE_UKRAINIAN: str = "uk_UA"; break;
+        case RETRO_LANGUAGE_CZECH: str = "cs_CZ"; break;
+        case RETRO_LANGUAGE_CATALAN_VALENCIA: str = "ca_ES"; break;
+        case RETRO_LANGUAGE_CATALAN: str = "ca_AD"; break;
+        case RETRO_LANGUAGE_BRITISH_ENGLISH: str = "en_GB"; break;
+        case RETRO_LANGUAGE_HUNGARIAN: str = "hu_HU"; break;
+        case RETRO_LANGUAGE_BELARUSIAN: str = "be_BY"; break;
+        case RETRO_LANGUAGE_GALICIAN: str = "gl_ES"; break;
+        case RETRO_LANGUAGE_NORWEGIAN: str = "no_NO"; break;
     }
 
     return sb()->bind<struct rb_str_new_cstr>()()(str);