diff --git a/src/cocoa/radiobox.mm b/src/cocoa/radiobox.mm
index 5ee7d00586..6ce3aa2dd3 100644
--- a/src/cocoa/radiobox.mm
+++ b/src/cocoa/radiobox.mm
@@ -167,6 +167,11 @@ bool wxRadioBox::Create(wxWindow *parent, wxWindowID winid,
 
     SetMajorDim(majorDim, style);
 
+    // Set the selection to the first item if we have any items.
+    // This is for parity with other wx ports which do the same thing.
+    if(n > 0)
+        SetSelection(0);
+
     if(m_parent)
         m_parent->CocoaAddChild(this);