diff --git a/include/wx/osx/window.h b/include/wx/osx/window.h
index 46ab294af7..2b14153541 100644
--- a/include/wx/osx/window.h
+++ b/include/wx/osx/window.h
@@ -72,8 +72,6 @@ public:
         return OSXShowWithEffect(false, effect, timeout);
     }
 
-    virtual bool IsShownOnScreen() const wxOVERRIDE;
-
     virtual void SetFocus() wxOVERRIDE;
 
     virtual void WarpPointer( int x, int y ) wxOVERRIDE;
diff --git a/src/osx/window_osx.cpp b/src/osx/window_osx.cpp
index e53690f4a9..beccd49723 100644
--- a/src/osx/window_osx.cpp
+++ b/src/osx/window_osx.cpp
@@ -2418,29 +2418,6 @@ wxByte wxWindowMac::GetTransparent() const
     return m_macAlpha ;
 }
 
-bool wxWindowMac::IsShownOnScreen() const
-{
-    if ( GetPeer() && GetPeer()->IsOk() )
-    {
-        bool peerVis = GetPeer()->IsVisible();
-        bool wxVis = wxWindowBase::IsShownOnScreen();
-        if( peerVis != wxVis )
-        {
-            // CS : put a breakpoint here to investigate differences
-            // between native an wx visibilities
-            // the only place where I've encountered them until now
-            // are the hiding/showing sequences where the vis-changed event is
-            // first sent to the innermost control, while wx does things
-            // from the outmost control
-            wxVis = wxWindowBase::IsShownOnScreen();
-            return wxVis;
-        }
-
-        return GetPeer()->IsVisible();
-    }
-    return wxWindowBase::IsShownOnScreen();
-}
-
 #if wxUSE_HOTKEY && wxOSX_USE_COCOA_OR_CARBON
 
 OSStatus