Index: /trunk/source/lisp-kernel/platform-win64.h
===================================================================
--- /trunk/source/lisp-kernel/platform-win64.h	(revision 13610)
+++ /trunk/source/lisp-kernel/platform-win64.h	(revision 13611)
@@ -21,4 +21,6 @@
 #define PLATFORM_WORD_SIZE PLATFORM_WORD_SIZE_64
 
+#include <windows.h>
+
 typedef CONTEXT ExceptionInformation;