diff --git a/Mage.Sets/src/mage/cards/g/GiselaBladeOfGoldnight.java b/Mage.Sets/src/mage/cards/g/GiselaBladeOfGoldnight.java
index ff0cd7caa0..812edd6216 100644
--- a/Mage.Sets/src/mage/cards/g/GiselaBladeOfGoldnight.java
+++ b/Mage.Sets/src/mage/cards/g/GiselaBladeOfGoldnight.java
@@ -41,6 +41,7 @@ import mage.game.Game;
 import mage.game.events.GameEvent;
 import mage.game.events.GameEvent.EventType;
 import mage.game.permanent.Permanent;
+import mage.util.CardUtil;
 
 /**
  * @author noxx
@@ -124,7 +125,7 @@ class GiselaBladeOfGoldnightDoubleDamageEffect extends ReplacementEffectImpl {
                 if (event.getTargetId().equals(source.getControllerId())) {
                     preventDamage(event, source, source.getControllerId(), game);
                 } else if (game.getOpponents(source.getControllerId()).contains(event.getTargetId())) {
-                    event.setAmount(game.addWithOverflowCheck(event.getAmount(), event.getAmount()));
+                    event.setAmount(CardUtil.addWithOverflowCheck(event.getAmount(), event.getAmount()));
                 }
                 break;
             case DAMAGE_CREATURE:
@@ -134,7 +135,7 @@ class GiselaBladeOfGoldnightDoubleDamageEffect extends ReplacementEffectImpl {
                     if (permanent.getControllerId().equals(source.getControllerId())) {
                         preventDamage(event, source, permanent.getId(), game);
                     } else if (game.getOpponents(source.getControllerId()).contains(permanent.getControllerId())) {
-                        event.setAmount(game.addWithOverflowCheck(event.getAmount(), event.getAmount()));
+                        event.setAmount(CardUtil.addWithOverflowCheck(event.getAmount(), event.getAmount()));
                     }
                 }
         }