The 30-year old goal machine has 19 of Killieâ€™s 40 league tallies this season with Rory McKenzie the next highest on just four.
Johnston, whose side sits eighth on the Scottish Premiership, praised McKenzie for his goal in the weekendâ€™s 2-1 victory at Motherwell but wants more help for he and Rugby Park hero Boyd.
â€śIt canâ€™t just be Kris scoring all the goals. Rory McKenzie has done that for us a little bit this season, doing well from that wide role out on the right, using his pace to get in behind teams,â€ť said Johnston ahead of Saturdayâ€™s home clash with St Johnstone.
â€śHe is a real threat when he plays like that and you saw that with his goal against Motherwell last Saturday.
â€śBut we canâ€™t rely on just one player like Kris to score the majority of our goals. Itâ€™s great that we have got someone of his quality. However, we need everyone to chip in.
â€śWe do have players capable of scoring goals if they get into the right areas.â€ť
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