diff --git a/cc/tree_synchronizer_unittest.cc b/cc/tree_synchronizer_unittest.cc
index d2acd186..993183c 100644
--- a/cc/tree_synchronizer_unittest.cc
+++ b/cc/tree_synchronizer_unittest.cc
@@ -6,8 +6,8 @@
 
 #include <algorithm>
 
+#include "cc/animation/layer_animation_controller.h"
 #include "cc/layer.h"
-#include "cc/layer_animation_controller.h"
 #include "cc/layer_impl.h"
 #include "cc/proxy.h"
 #include "cc/single_thread_proxy.h"