diff --git a/include/wx/gtk/listbox.h b/include/wx/gtk/listbox.h
index 7804a96625..544d10dd0c 100644
--- a/include/wx/gtk/listbox.h
+++ b/include/wx/gtk/listbox.h
@@ -18,7 +18,10 @@ class WXDLLIMPEXP_CORE wxListBox : public wxListBoxBase
 {
 public:
     // ctors and such
-    wxListBox();
+    wxListBox()
+    {
+        Init();
+    }
     wxListBox( wxWindow *parent, wxWindowID id,
             const wxPoint& pos = wxDefaultPosition,
             const wxSize& size = wxDefaultSize,
@@ -27,9 +30,7 @@ public:
             const wxValidator& validator = wxDefaultValidator,
             const wxString& name = wxListBoxNameStr )
     {
-#if wxUSE_CHECKLISTBOX
-        m_hasCheckBoxes = FALSE;
-#endif // wxUSE_CHECKLISTBOX
+        Init();
         Create(parent, id, pos, size, n, choices, style, validator, name);
     }
     wxListBox( wxWindow *parent, wxWindowID id,
@@ -40,13 +41,13 @@ public:
             const wxValidator& validator = wxDefaultValidator,
             const wxString& name = wxListBoxNameStr )
     {
-#if wxUSE_CHECKLISTBOX
-        m_hasCheckBoxes = FALSE;
-#endif // wxUSE_CHECKLISTBOX
+        Init();
         Create(parent, id, pos, size, choices, style, validator, name);
     }
     virtual ~wxListBox();
 
+    void Init(); //common construction
+
     bool Create(wxWindow *parent, wxWindowID id,
                 const wxPoint& pos = wxDefaultPosition,
                 const wxSize& size = wxDefaultSize,
diff --git a/src/gtk/listbox.cpp b/src/gtk/listbox.cpp
index d908514a19..2028db5fea 100644
--- a/src/gtk/listbox.cpp
+++ b/src/gtk/listbox.cpp
@@ -419,7 +419,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)
 // construction
 // ----------------------------------------------------------------------------
 
-wxListBox::wxListBox()
+void wxListBox::Init()
 {
     m_treeview = (GtkTreeView*) NULL;
 #if wxUSE_CHECKLISTBOX