diff --git a/headers/os/support/StackOrHeapArray.h b/headers/os/support/StackOrHeapArray.h
index af40bf0e1b..45049a4129 100644
--- a/headers/os/support/StackOrHeapArray.h
+++ b/headers/os/support/StackOrHeapArray.h
@@ -5,6 +5,7 @@
 #ifndef	_SUPPORT_STACKORHEAPARRAY_H
 #define	_SUPPORT_STACKORHEAPARRAY_H
 
+#include <cstddef>
 #include <new>
 
 template <typename Type, int StackSize>