If your style is Equal Level Conversion, you might consider doubling 1♦ here. Then 1♠ over pd's expected 1♥ could show this.
Any hand with 5 spades would have overcalled 1♠ or can jump to 2♠ now, say 18+.
Of course, the problem with double is a sequence like
(1♦) X (2♦) 2♥.
Are you prepared to risk that?

Help

East opens 1♦