Index: src/Concurrency/Waituntil.cpp
===================================================================
--- src/Concurrency/Waituntil.cpp	(revision 6e1e2d0299e4210d269f7a30ec3864a8bddceabb)
+++ src/Concurrency/Waituntil.cpp	(revision 6b1c4f2b7e0190ae0c36b5f7fc2c04f4626f49f2)
@@ -14,7 +14,9 @@
 //
 
+#include "Waituntil.hpp"
+
 #include <string>
 
-#include "Waituntil.hpp"
+#include "AST/Copy.hpp"
 #include "AST/Expr.hpp"
 #include "AST/Pass.hpp"