diff --git a/src/data/ability.ts b/src/data/ability.ts
index efbf7d3be82..176ed58d41d 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -2608,7 +2608,7 @@ export class ProtectStatAbAttr extends PreStatStageChangeAbAttr {
 
   /**
    * Apply the {@linkcode ProtectedStatAbAttr} to an interaction
-   * @param pokemon The {@linkcode Pokemon} with the ability
+   * @param _pokemon
    * @param _passive
    * @param simulated
    * @param stat the {@linkcode BattleStat} being affected
@@ -2616,8 +2616,8 @@ export class ProtectStatAbAttr extends PreStatStageChangeAbAttr {
    * @param _args
    * @returns true if the stat is protected, false otherwise
    */
-  applyPreStatStageChange(pokemon: Pokemon, _passive: boolean, _simulated: boolean, stat: BattleStat, cancelled: Utils.BooleanHolder, _args: any[]): boolean {
-    if (!this.isStatIncrease(pokemon) && (Utils.isNullOrUndefined(this.protectedStat) || stat === this.protectedStat)) {
+  applyPreStatStageChange(_pokemon: Pokemon, _passive: boolean, _simulated: boolean, stat: BattleStat, cancelled: Utils.BooleanHolder, _args: any[]): boolean {
+    if (Utils.isNullOrUndefined(this.protectedStat) || stat === this.protectedStat) {
       cancelled.value = true;
       return true;
     }
@@ -2632,15 +2632,6 @@ export class ProtectStatAbAttr extends PreStatStageChangeAbAttr {
       statName: this.protectedStat ? i18next.t(getStatKey(this.protectedStat)) : i18next.t("battle:stats")
     });
   }
-
-  /**
-   * Check if the stat is an increase due to an {@linkcode StatStageChangeMultiplierAbAttr} inverting the multiplier
-   * @param pokemon The {@linkcode Pokemon} with the ability
-   * @returns true if the stat is an increase due to an {@linkcode StatStageChangeMultiplierAbAttr} inverting the multiplier
-   */
-  private isStatIncrease(pokemon: Pokemon): boolean {
-    return pokemon.getAbilityAttrs(StatStageChangeMultiplierAbAttr).some(attr => attr.isInvert());
-  }
 }
 
 /**
@@ -3748,19 +3739,11 @@ export class StatStageChangeMultiplierAbAttr extends AbAttr {
     this.multiplier = multiplier;
   }
 
-  apply(pokemon: Pokemon, passive: boolean, simulated: boolean, cancelled: Utils.BooleanHolder, args: any[]): boolean {
+  override apply(pokemon: Pokemon, passive: boolean, simulated: boolean, cancelled: Utils.BooleanHolder, args: any[]): boolean {
     (args[0] as Utils.IntegerHolder).value *= this.multiplier;
 
     return true;
   }
-
-  /**
-   * Check if the multiplier is negative/inverts the change
-   * @returns true if the multiplier is negative
-   */
-  isInvert(): boolean {
-    return this.multiplier < 0;
-  }
 }
 
 export class StatStageChangeCopyAbAttr extends AbAttr {