diff --git a/src/xivlauncher.cpp b/src/xivlauncher.cpp
index 4cb7c4b..d5edf4c 100755
--- a/src/xivlauncher.cpp
+++ b/src/xivlauncher.cpp
@@ -153,7 +153,10 @@ void LauncherWindow::launchGame(const LoginAuth auth) {
             auto dalamudProcess = new QProcess();
 
             QStringList dalamudEnv = gameProcess->environment();
+
+#if defined(Q_OS_LINUX) || defined(Q_OS_MAC)
             dalamudEnv << "XL_WINEONLINUX=true";
+#endif
 
             dalamudProcess->setEnvironment(dalamudEnv);