diff --git a/Tetris2000/Tetris2000.py b/Tetris2000/Tetris2000.py
index c9aa92d..1dc0f45 100644
--- a/Tetris2000/Tetris2000.py
+++ b/Tetris2000/Tetris2000.py
@@ -1926,7 +1926,7 @@ class Window(QtWidgets.QMainWindow):
         qsettings.setValue("WindowState", int(self.windowState()))
 
 
-def main(args={}):
+def main(args=[]):
     app = QtWidgets.QApplication.instance() or QtWidgets.QApplication(args)
     win = Window()
     return app.exec_()