diff --git a/mainwindow.py b/mainwindow.py
index 1260882..6200bfb 100755
--- a/mainwindow.py
+++ b/mainwindow.py
@@ -2118,7 +2118,7 @@ defultProgramList = {
     "WineBottonDifferent": False,
     "CenterWindow": False,
     "Theme": "",
-    "MonoGeckoInstaller": True,
+    "MonoGeckoInstaller": False,
     "AutoWine": True,
     "RuntimeCache": True,
     "MustRead": False,