diff --git a/src/data/ability.ts b/src/data/ability.ts
index 890ec9cfa6a..3cfffa8c14b 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -2913,7 +2913,8 @@ export function initAbilities() {
       .attr(DownloadAbAttr),
     new Ability(Abilities.IRON_FIST, 4)
       .attr(MovePowerBoostAbAttr, (user, target, move) => move.hasFlag(MoveFlags.PUNCHING_MOVE), 1.2),
-    new Ability(Abilities.POISON_HEAL,  4),
+    new Ability(Abilities.POISON_HEAL,  4)
+      .unimplemented(),
     new Ability(Abilities.ADAPTABILITY, 4)
       .attr(StabBoostAbAttr),
     new Ability(Abilities.SKILL_LINK, 4)