diff --git a/samples/text/text.cpp b/samples/text/text.cpp
index 8ae237b1dd..2b6f3701e4 100644
--- a/samples/text/text.cpp
+++ b/samples/text/text.cpp
@@ -42,6 +42,7 @@
 
 #include "wx/colordlg.h"
 #include "wx/fontdlg.h"
+#include "wx/numdlg.h"
 
 //----------------------------------------------------------------------
 // class definitions