diff --git a/main.py b/main.py
index 388d8d5..d910c30 100644
--- a/main.py
+++ b/main.py
@@ -29,6 +29,7 @@ options.gpio_slowdown = 4
 options.brightness = 50
 screen = RGBMatrix(options = options)
 
+changed = True
 
 
 token = util.prompt_for_user_token(username, scope, client_id, client_secret, redirect_uri)
@@ -76,8 +77,9 @@ def main():
 
 
 def updateImage():
-    this.canvas = Image.new('RGB', (192, 128), color = 'red')
-    this.canvas = canvas.paste(get_track(), (0,0))
+    global canvas = Image.new('RGB', (192, 128), color = 'red')
+    global canvas = canvas.paste(get_track(), (0,0))
+    global changed = True
 
  
  
@@ -86,7 +88,9 @@ if __name__ == "__main__":
     print('text')
     
     while True:
-        showImage(canvas)
+        if (changed):
+            showImage(canvas)
+            global changed = False