diff --git a/GpCommon/GpWindows.h b/GpCommon/GpWindows.h
index e7b8672..6250ff9 100644
--- a/GpCommon/GpWindows.h
+++ b/GpCommon/GpWindows.h
@@ -9,6 +9,7 @@
 #undef CreateMutex
 #undef DeleteFile
 #undef LoadCursor
+#undef CreateFile
 
 struct IGpFiber;
 struct IGpBWCursor_Win32;