diff --git a/src/data/abilities/ability.ts b/src/data/abilities/ability.ts
index 66d00d950d2..adcf93f7adf 100644
--- a/src/data/abilities/ability.ts
+++ b/src/data/abilities/ability.ts
@@ -4813,7 +4813,7 @@ export class MoodyAbAttr extends PostTurnAbAttr {
     if (!simulated) {
       if (canRaise.length > 0) {
         const raisedStat = canRaise[pokemon.randBattleSeedInt(canRaise.length)];
-        canLower = canRaise.filter(s => s !== raisedStat);
+        canLower = canLower.filter(s => s !== raisedStat);
         globalScene.phaseManager.unshiftNew("StatStageChangePhase", pokemon.getBattlerIndex(), true, [raisedStat], 2);
       }
       if (canLower.length > 0) {
diff --git a/test/abilities/moody.test.ts b/test/abilities/moody.test.ts
index d1f8aa2e351..b7882c15ced 100644
--- a/test/abilities/moody.test.ts
+++ b/test/abilities/moody.test.ts
@@ -84,4 +84,40 @@ describe("Abilities - Moody", () => {
     expect(decreasedStat).toBeTruthy();
     expect(decreasedStat.length).toBe(1);
   });
+
+  it("should only try to increase a stat stage by 1 if the stat stage is not at 6", async () => {
+    await game.classicMode.startBattle();
+
+    const playerPokemon = game.field.getPlayerPokemon();
+
+    // Set all stat stages to 6
+    vi.spyOn(playerPokemon.summonData, "statStages", "get").mockReturnValue(new Array(BATTLE_STATS.length).fill(6));
+
+    // Set one of the stat stages to -6
+    const raisedStat = EFFECTIVE_STATS[playerPokemon.randBattleSeedInt(EFFECTIVE_STATS.length)];
+    playerPokemon.setStatStage(raisedStat, -6);
+
+    game.move.select(MoveId.SPLASH);
+    await game.toNextTurn();
+
+    expect(playerPokemon.getStatStage(raisedStat), "should increase only the stat that is not at stage 6").toBe(-4);
+  });
+
+  it("should only try to decrease a stat stage by 1 if the stat stage is not at -6", async () => {
+    await game.classicMode.startBattle();
+
+    const playerPokemon = game.field.getPlayerPokemon();
+
+    // Set all stat stages to -6
+    vi.spyOn(playerPokemon.summonData, "statStages", "get").mockReturnValue(new Array(BATTLE_STATS.length).fill(-6));
+
+    // Set one of the stat stages to 6
+    const raisedStat = EFFECTIVE_STATS[playerPokemon.randBattleSeedInt(EFFECTIVE_STATS.length)];
+    playerPokemon.setStatStage(raisedStat, 6);
+
+    game.move.select(MoveId.SPLASH);
+    await game.toNextTurn();
+
+    expect(playerPokemon.getStatStage(raisedStat), "should decrease only the stat that is not at stage -6").toBe(5);
+  });
 });