diff --git a/src/data/ability.ts b/src/data/ability.ts
index 6ba5019f7ab..1547c2a9f84 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -6015,6 +6015,7 @@ export function initAbilities() {
       .attr(StatMultiplierAbAttr, Stat.ACC, 1.3),
     new Ability(Abilities.INSOMNIA, 3)
       .attr(StatusEffectImmunityAbAttr, StatusEffect.SLEEP)
+      .attr(PostSummonHealStatusAbAttr, StatusEffect.SLEEP)
       .attr(BattlerTagImmunityAbAttr, BattlerTagType.DROWSY)
       .ignorable(),
     new Ability(Abilities.COLOR_CHANGE, 3)