diff --git a/kivy/uix/screenmanager.py b/kivy/uix/screenmanager.py
index 1643b8fc9..34c24a702 100644
--- a/kivy/uix/screenmanager.py
+++ b/kivy/uix/screenmanager.py
@@ -200,7 +200,7 @@ from kivy.uix.relativelayout import RelativeLayout
 from kivy.lang import Builder
 from kivy.graphics import (RenderContext, Rectangle, Fbo,
                            ClearColor, ClearBuffers, BindTexture, PushMatrix,
-                           PopMatrix, Translate, Callback)
+                           PopMatrix, Translate, Callback, Scale)
 
 
 class ScreenManagerException(Exception):