diff --git a/include/wx/mac/carbon/mdi.h b/include/wx/mac/carbon/mdi.h
index 1e5145e7bc..bde585e045 100644
--- a/include/wx/mac/carbon/mdi.h
+++ b/include/wx/mac/carbon/mdi.h
@@ -80,6 +80,8 @@ public:
   virtual void ActivateNext();
   virtual void ActivatePrevious();
 
+  virtual bool Show( bool show = true );
+
 protected:
 
   // TODO maybe have this member
diff --git a/src/mac/carbon/mdi.cpp b/src/mac/carbon/mdi.cpp
index 1cdfc54d3b..248c03e48c 100644
--- a/src/mac/carbon/mdi.cpp
+++ b/src/mac/carbon/mdi.cpp
@@ -233,6 +233,22 @@ void wxMDIParentFrame::ActivatePrevious()
     // TODO
 }
 
+bool wxMDIParentFrame::Show( bool show )
+{
+    if ( !wxFrame::Show(show) )
+        return false;
+
+    // don't really show the MDI frame unless it has any children other than
+    // MDI children as it is pretty useless in this case
+    if ( show )
+    {
+        // TODO: check for other children
+        Move(-10000, -10000);
+    }
+
+    return true;
+}
+
 // Child frame
 
 wxMDIChildFrame::wxMDIChildFrame()