diff --git a/rtengine/myfile.cc b/rtengine/myfile.cc
index ff92d408c..0cfef0b88 100644
--- a/rtengine/myfile.cc
+++ b/rtengine/myfile.cc
@@ -30,7 +30,7 @@
 #ifdef WIN32
 
 #include <fcntl.h>
-#include <ddk/ntifs.h>
+#include <windows.h>
 
 // dummy values
 #define MAP_PRIVATE 1