Index: src/ControlStruct/Mutate.h
===================================================================
--- src/ControlStruct/Mutate.h	(revision 6b0b624129f6017f7706b516a24a52e382e3a334)
+++ src/ControlStruct/Mutate.h	(revision 597c34a361d0410d2480af5d9e812b7978499c8a)
@@ -16,8 +16,7 @@
 #pragma once
 
-#include <list>
-#include <iostream>
+#include <list>  // for list
 
-#include "SynTree/Declaration.h"
+class Declaration;
 
 namespace ControlStruct {