Separate icons for gizmo and script

I set gizmo icon for my component with this piece of code:

 OnDrawGizmos() 
 {
     Gizmos.DrawIcon(transform.position, "Component icon", true);
 }

Also I set icon for me script in inspector. And now I have a problem: script icon overlaps gizmo icon in scene view. How to use separate icons like in built-in components?