diff --git a/Mage/src/mage/abilities/costs/OptionalAdditionalSourceCosts.java b/Mage/src/mage/abilities/costs/OptionalAdditionalSourceCosts.java
index 72f59f98b1..41bebeb4fa 100644
--- a/Mage/src/mage/abilities/costs/OptionalAdditionalSourceCosts.java
+++ b/Mage/src/mage/abilities/costs/OptionalAdditionalSourceCosts.java
@@ -31,7 +31,7 @@ import mage.abilities.Ability;
 import mage.game.Game;
 
 /**
- * Interface for abilities that add addional costs to the source.
+ * Interface for abilities that add additional costs to the source.
  *
  * Example of such additional source costs: {@link mage.abilities.keyword.KickerAbility}
  *