diff --git a/tk_first_steps/stopwatch.py b/tk_first_steps/stopwatch.py
index 9088cd9..77901fe 100644
--- a/tk_first_steps/stopwatch.py
+++ b/tk_first_steps/stopwatch.py
@@ -65,6 +65,7 @@ class StopWatch_App(Tk):
     def __init__(self):
         super().__init__()
         self.controller = WatchController(self)
+        self.create_control_variables()
         self.create_widgets()
         self.bind_events()