Index: ext/libicpf/src/file.h
===================================================================
diff -u -N -re17c80d36eaa0430313e7d1058aa7a301d1510af -r2fbc37353d34089b513dab08f83d494d5aea3e7f
--- ext/libicpf/src/file.h	(.../file.h)	(revision e17c80d36eaa0430313e7d1058aa7a301d1510af)
+++ ext/libicpf/src/file.h	(.../file.h)	(revision 2fbc37353d34089b513dab08f83d494d5aea3e7f)
@@ -30,6 +30,9 @@
 #include "exception.h"
 #include "libicpf.h"
 #include "str.h"
+#ifdef _WIN32
+	#include "windows.h"
+#endif
 
 /// A synonym for the file class
 #define serializer file;