diff --git a/head_pose.py b/head_pose.py
index 97d40fe..69c23ef 100644
--- a/head_pose.py
+++ b/head_pose.py
@@ -175,6 +175,7 @@ imageWindowRoot = Tk.Toplevel()
 imageWindowSize = (1000,1000)
 imageWindowRoot.geometry('%dx%d+%d+%d' % (imageWindowSize[0],imageWindowSize[1],0,0))
 imageCanvas = Tk.Canvas(imageWindowRoot,width=1000,height=1000)
+imageCanvas.pack()
 
 while True:
     t1 = time.time()