diff --git a/src/data/ability.ts b/src/data/ability.ts
index 2af1eb2b7..ffa7e1697 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -163,7 +163,7 @@ export class PreDefendAbAttr extends AbAttr {
   }
 }
 
-export class PreDefendEndureAbAttr extends PreDefendAbAttr {
+export class PreDefendFullHpEndureAbAttr extends PreDefendAbAttr {
   applyPreDefend(pokemon: Pokemon, attacker: Pokemon, move: PokemonMove, cancelled: Utils.BooleanHolder, args: any[]): boolean {
     if (pokemon.getHpRatio() < 1 || (args[0] as Utils.NumberHolder).value < pokemon.hp)
       return false;
@@ -1978,7 +1978,7 @@ export function initAbilities() {
       .attr(BlockCritAbAttr)
       .ignorable(),
     new Ability(Abilities.STURDY, "Sturdy", "It cannot be knocked out with one hit. One-hit KO moves cannot knock it out, either.", 3)    
-      .attr(PreDefendEndureAbAttr)
+      .attr(PreDefendFullHpEndureAbAttr)
       .attr(BlockOneHitKOAbAttr)
       .ignorable(),
     new Ability(Abilities.DAMP, "Damp (N)", "Prevents the use of explosive moves, such as Self-Destruct, by dampening its surroundings.", 3)
diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index d7ff22c4b..a31f14f60 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -25,7 +25,7 @@ import { TempBattleStat } from '../data/temp-battle-stat';
 import { WeakenMoveTypeTag } from '../data/arena-tag';
 import { ArenaTagType } from "../data/enums/arena-tag-type";
 import { Biome } from "../data/enums/biome";
-import { Abilities, Ability, BattleStatMultiplierAbAttr, BlockCritAbAttr, BypassBurnDamageReductionAbAttr, FieldVariableMovePowerAbAttr, IgnoreOpponentStatChangesAbAttr, MoveImmunityAbAttr, NonSuperEffectiveImmunityAbAttr, PreApplyBattlerTagAbAttr, PreDefendEndureAbAttr, ReceivedMoveDamageMultiplierAbAttr, ReduceStatusEffectDurationAbAttr, StabBoostAbAttr, StatusEffectImmunityAbAttr, TypeImmunityAbAttr, VariableMovePowerAbAttr, WeightMultiplierAbAttr, allAbilities, applyAbAttrs, applyBattleStatMultiplierAbAttrs, applyPostDefendAbAttrs, applyPreApplyBattlerTagAbAttrs, applyPreAttackAbAttrs, applyPreDefendAbAttrs, applyPreSetStatusAbAttrs } from '../data/ability';
+import { Abilities, Ability, BattleStatMultiplierAbAttr, BlockCritAbAttr, BypassBurnDamageReductionAbAttr, FieldVariableMovePowerAbAttr, IgnoreOpponentStatChangesAbAttr, MoveImmunityAbAttr, NonSuperEffectiveImmunityAbAttr, PreApplyBattlerTagAbAttr, PreDefendFullHpEndureAbAttr, ReceivedMoveDamageMultiplierAbAttr, ReduceStatusEffectDurationAbAttr, StabBoostAbAttr, StatusEffectImmunityAbAttr, TypeImmunityAbAttr, VariableMovePowerAbAttr, WeightMultiplierAbAttr, allAbilities, applyAbAttrs, applyBattleStatMultiplierAbAttrs, applyPostDefendAbAttrs, applyPreApplyBattlerTagAbAttrs, applyPreAttackAbAttrs, applyPreDefendAbAttrs, applyPreSetStatusAbAttrs } from '../data/ability';
 import PokemonData from '../system/pokemon-data';
 import { BattlerIndex } from '../battle';
 import { BattleSpec } from "../enums/battle-spec";
@@ -1172,8 +1172,8 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
               this.scene.applyModifiers(EnemyDamageReducerModifier, false, damage);
           }
 
-          if (damage.value) {
-            applyPreDefendAbAttrs(PreDefendEndureAbAttr, this, source, battlerMove, cancelled, damage);
+          if (damage.value && this.getHpRatio() === 1) {
+            applyPreDefendAbAttrs(PreDefendFullHpEndureAbAttr, this, source, battlerMove, cancelled, damage);
 
             const oneHitKo = result === HitResult.ONE_HIT_KO;
             damage.value = this.damageAndUpdate(damage.value, result as DamageResult, isCritical, oneHitKo, oneHitKo);