diff --git a/samples/exec/exec.cpp b/samples/exec/exec.cpp
index b508cc9efd..65957f0d44 100644
--- a/samples/exec/exec.cpp
+++ b/samples/exec/exec.cpp
@@ -35,6 +35,9 @@
     #include "wx/app.h"
     #include "wx/frame.h"
     #include "wx/utils.h"
+    #include "wx/menu.h"
+    #include "wx/msgdlg.h"
+    #include "wx/textdlg.h"
 #endif
 
 #include "wx/process.h"