diff --git a/launcher/minecraft/MinecraftInstance.cpp b/launcher/minecraft/MinecraftInstance.cpp
index 5f86c1ce3..0e8ff2083 100644
--- a/launcher/minecraft/MinecraftInstance.cpp
+++ b/launcher/minecraft/MinecraftInstance.cpp
@@ -651,7 +651,7 @@ QMap<QString, QString> MinecraftInstance::getVariables()
     out.insert("INST_ID", id());
     out.insert("INST_DIR", QDir::toNativeSeparators(QDir(instanceRoot()).absolutePath()));
     out.insert("INST_MC_DIR", QDir::toNativeSeparators(QDir(gameRoot()).absolutePath()));
-    out.insert("INST_JAVA", settings()->get("JavaPath").toString());
+    out.insert("INST_JAVA", QDir::toNativeSeparators(QDir(settings()->get("JavaPath").toString()).absolutePath()));
     out.insert("INST_JAVA_ARGS", javaArguments().join(' '));
     out.insert("NO_COLOR", "1");
 #ifdef Q_OS_MACOS