diff --git a/thermopi/screen.py b/thermopi/screen.py
index f136aad..7a1c4e6 100644
--- a/thermopi/screen.py
+++ b/thermopi/screen.py
@@ -79,6 +79,7 @@ def main(windowed_mode):
                     running = False
             if event.type == pygame.MOUSEBUTTONDOWN:
                 get_mouse_speed = True
+                mouse_pos = pygame.mouse.get_pos()
                 prev_mouse_pos = mouse_pos
             if event.type == pygame.MOUSEBUTTONUP:
                 get_mouse_speed = False
@@ -92,8 +93,6 @@ def main(windowed_mode):
             speed_coeff = math.cos((mouse_angle - (0.5 * PI)) - diff_angle)
             final_speed = movement_speed * speed_coeff
             dial.move_dial(final_speed / -3000.0)
-            pygame.draw.circle(window, (0, 255, 0), (10, 10), 15)
-            pygame.display.flip()
 
 
     pygame.quit()