diff --git a/Mage/src/mage/game/stack/StackAbility.java b/Mage/src/mage/game/stack/StackAbility.java
index 9f735ea4928..b70967a2a1d 100644
--- a/Mage/src/mage/game/stack/StackAbility.java
+++ b/Mage/src/mage/game/stack/StackAbility.java
@@ -419,6 +419,11 @@ public class StackAbility implements StackObject, Ability {
     public String getGameLogMessage(Game game) {
         throw new UnsupportedOperationException("Not supported."); //To change body of generated methods, choose Tools | Templates.
     }
+
+    @Override
+    public void setCostModificationActive(boolean active) {
+        throw new UnsupportedOperationException("Not supported. Only neede for flashbacked spells"); 
+    }
     
     
 }