diff --git a/Mage.Tests/src/test/java/org/mage/test/serverside/base/impl/CardTestPlayerAPIImpl.java b/Mage.Tests/src/test/java/org/mage/test/serverside/base/impl/CardTestPlayerAPIImpl.java
index 796099e797..6e5f305af4 100644
--- a/Mage.Tests/src/test/java/org/mage/test/serverside/base/impl/CardTestPlayerAPIImpl.java
+++ b/Mage.Tests/src/test/java/org/mage/test/serverside/base/impl/CardTestPlayerAPIImpl.java
@@ -1963,7 +1963,7 @@ public abstract class CardTestPlayerAPIImpl extends MageTestPlayerBase implement
         //Assert.assertNotEquals("", attacker);
         assertAliaseSupportInActivateCommand(attacker, false); // it uses old special notation like card_name:index
         assertAliaseSupportInActivateCommand(planeswalker, false);
-        addPlayerAction(player, turnNum, PhaseStep.DECLARE_ATTACKERS, new StringBuilder("attack:").append(attacker).append("$planeswalker=").append(planeswalker).toString());
+        addPlayerAction(player, turnNum, PhaseStep.DECLARE_ATTACKERS, "attack:" + attacker + "$planeswalker=" + planeswalker);
     }
 
     public void attackSkip(int turnNum, TestPlayer player) {