diff --git a/samples/notebook/notebook.cpp b/samples/notebook/notebook.cpp
index 1fc248501e..bbe2ef4075 100644
--- a/samples/notebook/notebook.cpp
+++ b/samples/notebook/notebook.cpp
@@ -427,7 +427,6 @@ void MyFrame::RecreateBook()
 
     if ( m_multi && m_type == Type_Notebook )
         flags |= wxNB_MULTILINE;
-    flags |= wxDOUBLE_BORDER;
 
     wxBookCtrlBase *oldBook = m_bookCtrl;