diff --git a/samples/widgets/widgets.h b/samples/widgets/widgets.h
index 84fd2abc33..da451951f9 100644
--- a/samples/widgets/widgets.h
+++ b/samples/widgets/widgets.h
@@ -12,7 +12,7 @@
 #ifndef _WX_SAMPLE_WIDGETS_H_
 #define _WX_SAMPLE_WIDGETS_H_
 
-#if wxUSE_TREEBOOK && !defined(__WXHANDHELD__) && !defined(__WXPM__)
+#if wxUSE_TREEBOOK && !defined(__WXHANDHELD__)
     #include "wx/treebook.h"
     #define USE_TREEBOOK 1
     #define WidgetsBookCtrl wxTreebook