diff --git a/data/abilities.ts b/data/abilities.ts
index dc838955233c..8b86d393174c 100644
--- a/data/abilities.ts
+++ b/data/abilities.ts
@@ -1695,7 +1695,7 @@ export const Abilities: {[abilityid: string]: AbilityData} = {
 		},
 		// The Dive part of this mechanic is implemented in Dive's `onTryMove` in moves.ts
 		onSourceTryPrimaryHit(target, source, effect) {
-			if (effect && effect.id === 'surf' && source.hasAbility('gulpmissile') && source.species.name === 'Cramorant') {
+			if (effect?.id === 'surf' && source.hasAbility('gulpmissile') && source.species.name === 'Cramorant') {
 				const forme = source.hp <= source.maxhp / 2 ? 'cramorantgorging' : 'cramorantgulping';
 				source.formeChange(forme, effect);
 			}