--- old/src/cpu/zero/vm/stack_zero.cpp	2017-07-04 23:39:09.021534305 +0200
+++ new/src/cpu/zero/vm/stack_zero.cpp	2017-07-04 23:39:08.877529599 +0200
@@ -28,6 +28,7 @@
 #include "runtime/thread.hpp"
 #include "stack_zero.hpp"
 #include "stack_zero.inline.hpp"
+#include "utilities/align.hpp"
 
 // Inlined causes circular inclusion with thread.hpp
 ZeroStack::ZeroStack()