diff --git a/src/msw/window.cpp b/src/msw/window.cpp
index feee0853de..e4748ae8a1 100644
--- a/src/msw/window.cpp
+++ b/src/msw/window.cpp
@@ -112,6 +112,8 @@
     #include "wx/msw/gnuwin32/extra.h"
 #endif
 
+#include "wx/msw/missing.h"     // for ENDSESSION_LOGOFF
+
 // ----------------------------------------------------------------------------
 // standard constants not available with all compilers/headers
 // ----------------------------------------------------------------------------