diff --git a/GUI_Motor_Shield.py b/GUI_Motor_Shield.py
index a180502..53e9d02 100644
--- a/GUI_Motor_Shield.py
+++ b/GUI_Motor_Shield.py
@@ -320,3 +320,4 @@ def A4_Off():
                     variable=var4, value=2).place(x=547, y=445)
 w4 = tkinter.Spinbox(width=5, values=(100, 90, 80, 70, 60, 50, 40, 30, 20, 10))
 w4.place(x=565, y=480)
+window.mainloop()