diff --git a/animation/continual_animation.py b/animation/continual_animation.py
index 8a51c542..a99252b4 100644
--- a/animation/continual_animation.py
+++ b/animation/continual_animation.py
@@ -128,12 +128,14 @@ class NormalAnimationAsContinualAnimation(ContinualAnimation):
         )
 
 class CycleAnimation(ContinualAnimation):
-    def __init__(self, *animation, **kwargs):
+    def __init__(self, animation, **kwargs):
         self.animation = animation
         ContinualAnimation.__init__(self, animation.mobject, **kwargs)
 
     def update_mobject(self, dt):
-        sef.animation.update(self.internal_time % self.animation.run_time)
+        mod_value = self.internal_time % self.animation.run_time
+        alpha = mod_value/float(self.animation.run_time)
+        self.animation.update(alpha)