diff --git a/topics/light.py b/topics/light.py
index 67f1458c..c58c3d79 100644
--- a/topics/light.py
+++ b/topics/light.py
@@ -494,6 +494,8 @@ class Spotlight(VMobject):
             lower_angle = np.min(viewing_angles)
             upper_angle = np.max(viewing_angles)
 
+        if upper_angle - lower_angle > TAU/2:
+            lower_angle, upper_angle = upper_angle, lower_angle + TAU
         return lower_angle, upper_angle
 
     def viewing_rays(self,screen):
@@ -537,7 +539,6 @@ class Spotlight(VMobject):
                 new_submob = self.new_sector(submob.inner_radius,dr,lower_angle,upper_angle)
                 submob.points = new_submob.points
                 submob.set_fill(opacity = 10 * self.opacity_function(submob.outer_radius))
-                print "new opacity:", self.opacity_function(submob.outer_radius)