diff --git a/include/wx/msw/private/datecontrols.h b/include/wx/msw/private/datecontrols.h
index 3d5a865646..b56e2962bc 100644
--- a/include/wx/msw/private/datecontrols.h
+++ b/include/wx/msw/private/datecontrols.h
@@ -11,6 +11,10 @@
 #ifndef _MSW_PRIVATE_DATECONTROLS_H_
 #define _MSW_PRIVATE_DATECONTROLS_H_
 
+#include "wx/datetime.h"
+
+#include "wx/msw/wrapwin.h"
+
 // namespace for the helper functions related to the date controls
 namespace wxMSWDateControls
 {