diff --git a/src/pixi/display/Sprite.js b/src/pixi/display/Sprite.js
index aa9580e..f1d3a6e 100644
--- a/src/pixi/display/Sprite.js
+++ b/src/pixi/display/Sprite.js
@@ -181,8 +181,8 @@
     var worldTransform = matrix || this.worldTransform ;
 
     var a = worldTransform.a;
-    var b = worldTransform.c;
-    var c = worldTransform.b;
+    var b = worldTransform.b;
+    var c = worldTransform.c;
     var d = worldTransform.d;
     var tx = worldTransform.tx;
     var ty = worldTransform.ty;