diff --git a/src/msw/radiobox.cpp b/src/msw/radiobox.cpp
index c705e4a933..08a5e32134 100644
--- a/src/msw/radiobox.cpp
+++ b/src/msw/radiobox.cpp
@@ -32,6 +32,7 @@
     #include "wx/bitmap.h"
     #include "wx/brush.h"
     #include "wx/radiobox.h"
+    #include "wx/settings.h"
     #include "wx/log.h"
 #endif
 
diff --git a/src/msw/radiobut.cpp b/src/msw/radiobut.cpp
index 86afbdb5d4..6a10d9168d 100644
--- a/src/msw/radiobut.cpp
+++ b/src/msw/radiobut.cpp
@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include "wx/setup.h"
 #include "wx/radiobut.h"
+#include "wx/settings.h"
 #include "wx/brush.h"
 #endif