diff --git a/magictk/basicwindow.py b/magictk/basicwindow.py
index e43aa84..59d6842 100644
--- a/magictk/basicwindow.py
+++ b/magictk/basicwindow.py
@@ -68,6 +68,7 @@ class Tk(ttk.Frame):
         self.place(x=0, y=0, relwidth=1, relheight=1)
         self.main_tk.geometry(
             f"{self.w}x{self.h}+{self.x}+{self.y}")
+        self.main_tk.protocol("WM_DELETE_WINDOW", lambda *args: self.quit())
 
     def mainloop(self) -> None:
         t_start = time.time()