diff --git a/sakura_core/env/CShareData_IO.cpp b/sakura_core/env/CShareData_IO.cpp
index ee3b6740b9..e0550f7ea3 100644
--- a/sakura_core/env/CShareData_IO.cpp
+++ b/sakura_core/env/CShareData_IO.cpp
@@ -97,7 +97,7 @@ bool CShareData_IO::ShareData_IO_2( bool bRead )
 			/* 設定ファイルが存在しない */
 			LANGID langId = GetUserDefaultUILanguage();
 			// Windowsの表示言語が日本語でない場合は言語設定を英語にする
-			if (langId != 0x0411) {
+			if (langId != MAKELANGID( LANG_JAPANESE, SUBLANG_JAPANESE_JAPAN )) {
 				DLLSHAREDATA* pShareData = &GetDllShareData();
 				_tcscpy(pShareData->m_Common.m_sWindow.m_szLanguageDll, L"sakura_lang_en_US.dll");
 				cProfile.IOProfileData( L"Common", L"szLanguageDll", MakeStringBufferT( pShareData->m_Common.m_sWindow.m_szLanguageDll ) );