Operation execution dialog - change default focus from "target" to "ok"

When an “Operation execution” dialog pop’s up, the cursor is in the “target” field, i.e. this input box has focus. I need to tab twice to move to the okay button. Is there an option to focus the okay button as default? So that I can just hit enter to confirm?

If focus will be on the Ok button then you may press it by mistake if the dialog opens when you’re typing something and pressed Enter for new line.