diff --git a/src/data/ability.ts b/src/data/ability.ts
index da68f9271f9..27d87b19d86 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -3410,9 +3410,11 @@ export function initAbilities() {
     new Ability(Abilities.CUTE_CHARM, 3)
       .attr(PostDefendContactApplyTagChanceAbAttr, 30, BattlerTagType.INFATUATED),
     new Ability(Abilities.PLUS, 3)
-      .unimplemented(),
+      .conditionalAttr(p => p.scene.currentBattle.double && [Abilities.PLUS, Abilities.MINUS].some(a => p.getAlly().hasAbility(a)), BattleStatMultiplierAbAttr, BattleStat.SPATK, 1.5)
+      .ignorable(),
     new Ability(Abilities.MINUS, 3)
-      .unimplemented(),
+      .conditionalAttr(p => p.scene.currentBattle.double && [Abilities.PLUS, Abilities.MINUS].some(a => p.getAlly().hasAbility(a)), BattleStatMultiplierAbAttr, BattleStat.SPATK, 1.5)
+      .ignorable(),
     new Ability(Abilities.FORECAST, 3)
       .attr(UncopiableAbilityAbAttr)
       .attr(NoFusionAbilityAbAttr)