diff --git a/include/wx/osx/imaglist.h b/include/wx/osx/imaglist.h
index 0173832e75..fdab2447bd 100644
--- a/include/wx/osx/imaglist.h
+++ b/include/wx/osx/imaglist.h
@@ -32,7 +32,6 @@ public:
     virtual bool GetSize( int index, int &width, int &height ) const;
     virtual wxSize GetSize() const { return wxSize(m_width, m_height); }
 
-    int Add( const wxIcon& bitmap );
     int Add( const wxBitmap& bitmap );
     int Add( const wxBitmap& bitmap, const wxBitmap& mask );
     int Add( const wxBitmap& bitmap, const wxColour& maskColour );
diff --git a/src/osx/imaglist.cpp b/src/osx/imaglist.cpp
index 32f12fb4ee..d487bd8bc6 100644
--- a/src/osx/imaglist.cpp
+++ b/src/osx/imaglist.cpp
@@ -53,24 +53,6 @@ bool wxImageList::Create()
     return true;
 }
 
-int wxImageList::Add( const wxIcon &bitmap )
-{
-    wxASSERT_MSG( (bitmap.GetWidth() == m_width && bitmap.GetHeight() == m_height)
-                  || (m_width == 0 && m_height == 0),
-                  wxT("invalid bitmap size in wxImageList: this might work ")
-                  wxT("on this platform but definitely won't under Windows.") );
-
-    m_images.Append( new wxIcon( bitmap ) );
-
-    if (m_width == 0 && m_height == 0)
-    {
-        m_width = bitmap.GetWidth();
-        m_height = bitmap.GetHeight();
-    }
-
-    return m_images.GetCount() - 1;
-}
-
 int wxImageList::Add( const wxBitmap &bitmap )
 {
     wxASSERT_MSG( (bitmap.GetScaledWidth() >= m_width && bitmap.GetScaledHeight() == m_height)