Get rid of form icon in menu

I have an MDI form and a child form. When the child form is loaded an icon appears in the MDI form menu, to the very left. I´ve set the icon property of the child form to "none" but there is still the "generic" vb icon. How do I get rid of it? I don´t want it in the MDI form menu and I also don´t want it in the upper left corner of the child form.

Ok, to be more specific - the icon will appear in the MDI form menu only when the child form is maximized.

Anyone?