diff --git a/docs/changes.txt b/docs/changes.txt
index 914e7348a2..9e39bcc2af 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -344,6 +344,10 @@ All (GUI):
 - Added wxDC::CopyAttributes() and use it in wxBufferedDC.
 - Added wxTextWrapper helper class useful for wrapping lines of text.
 
+GTK:
+
+- wxRadioBox constructor uses default consistent with other ports now.
+
 MSW:
 
 - Allow changing the height of wxChoice and wxComboBox.
diff --git a/include/wx/gtk/radiobox.h b/include/wx/gtk/radiobox.h
index 1db0f9931a..89c1d9ee29 100644
--- a/include/wx/gtk/radiobox.h
+++ b/include/wx/gtk/radiobox.h
@@ -36,7 +36,7 @@ public:
                const wxSize& size = wxDefaultSize,
                int n = 0,
                const wxString choices[] = (const wxString *) NULL,
-               int majorDim = 1,
+               int majorDim = 0,
                long style = wxRA_HORIZONTAL,
                const wxValidator& val = wxDefaultValidator,
                const wxString& name = wxRadioBoxNameStr)
@@ -52,7 +52,7 @@ public:
                const wxPoint& pos,
                const wxSize& size,
                const wxArrayString& choices,
-               int majorDim = 1,
+               int majorDim = 0,
                long style = wxRA_HORIZONTAL,
                const wxValidator& val = wxDefaultValidator,
                const wxString& name = wxRadioBoxNameStr)