diff --git a/include/wx/defs.h b/include/wx/defs.h
index 18b75a8d6f..28daf3ef1c 100644
--- a/include/wx/defs.h
+++ b/include/wx/defs.h
@@ -2834,6 +2834,9 @@ typedef WX_NSOpenGLContext WXGLContext;
 DECLARE_WXCOCOA_OBJC_CLASS(UIWindow);
 DECLARE_WXCOCOA_OBJC_CLASS(UIView);
 DECLARE_WXCOCOA_OBJC_CLASS(UIFont);
+DECLARE_WXCOCOA_OBJC_CLASS(UIImage);
+DECLARE_WXCOCOA_OBJC_CLASS(UIEvent);
+DECLARE_WXCOCOA_OBJC_CLASS(NSSet);
 
 typedef WX_UIWindow WXWindow;
 typedef WX_UIView WXWidget;