diff --git a/include/wx/richtext/richtextsymboldlg.h b/include/wx/richtext/richtextsymboldlg.h
index 1a1bf68f70..28b9aa6231 100644
--- a/include/wx/richtext/richtextsymboldlg.h
+++ b/include/wx/richtext/richtextsymboldlg.h
@@ -18,6 +18,8 @@
 
 #include "wx/dialog.h"
 #include "wx/vscroll.h"
+#include "wx/combobox.h"
+#include "wx/stattext.h"
 
 /*!
  * Forward declarations
diff --git a/src/richtext/richtextstyledlg.cpp b/src/richtext/richtextstyledlg.cpp
index e7567dd64b..d8ed49fd09 100644
--- a/src/richtext/richtextstyledlg.cpp
+++ b/src/richtext/richtextstyledlg.cpp
@@ -94,7 +94,7 @@ void wxRichTextStyleOrganiserDialog::Init()
 {
     m_richTextStyleSheet = NULL;
     m_richTextCtrl = NULL;
-    m_dontUpdate = NULL;
+    m_dontUpdate = false;
     m_flags = 0;
     m_restartNumbering = true;