diff --git a/src/battle_util.c b/src/battle_util.c
index c7a8d19005..9792fbb152 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -3618,7 +3618,7 @@ u8 AbilityBattleEffects(u8 caseID, u8 battler, u8 ability, u8 special, u16 moveA
 
                 BattleScriptPushCursor();
                 gBattlescriptCurrInstr = BattleScript_AbilityCuredStatus;
-                gBattleScripting.battler = gActiveBattler = gAbilityBattler = battler;
+                gBattleScripting.battler = gActiveBattler = gBattlerAbility = battler;
                 BtlController_EmitSetMonData(0, REQUEST_STATUS_BATTLE, 0, 4, &gBattleMons[gActiveBattler].status1);
                 MarkBattlerForControllerExec(gActiveBattler);
                 return effect;
@@ -5775,6 +5775,18 @@ static u32 CalcAttackStat(u16 move, u8 battlerAtk, u8 battlerDef, u8 moveType, b
     return ApplyModifier(modifier, atkStat);
 }
 
+static bool32 CanEvolve(u32 species)
+{
+    u32 i;
+
+    for (i = 0; i < EVOS_PER_MON; i++)
+    {
+        if (gEvolutionTable[species][i].method && gEvolutionTable[species][i].method != EVO_MEGA_EVOLUTION)
+            return TRUE;
+    }
+    return FALSE;
+}
+
 static u32 CalcDefenseStat(u16 move, u8 battlerAtk, u8 battlerDef, u8 moveType, bool32 isCrit)
 {
     bool32 usesDefStat;
@@ -5867,7 +5879,8 @@ static u32 CalcDefenseStat(u16 move, u8 battlerAtk, u8 battlerDef, u8 moveType,
             MulModifier(&modifier, UQ_4_12(2.0));
         break;
     case HOLD_EFFECT_EVIOLITE:
-        // todo
+        if (CanEvolve(gBattleMons[battlerDef].species))
+            MulModifier(&modifier, UQ_4_12(1.5));
         break;
     case HOLD_EFFECT_ASSAULT_VEST:
         if (!usesDefStat)