diff --git a/Mage.Sets/src/mage/sets/tenth/MortalCombat.java b/Mage.Sets/src/mage/sets/tenth/MortalCombat.java
index 4b8217de17..129248a7b4 100644
--- a/Mage.Sets/src/mage/sets/tenth/MortalCombat.java
+++ b/Mage.Sets/src/mage/sets/tenth/MortalCombat.java
@@ -75,6 +75,6 @@ class TwentyGraveyardCreatureCondition implements Condition {
     @Override
     public boolean apply(Game game, Ability source) {  
         Player player = game.getPlayer(source.getControllerId());
-        return player.getGraveyard().count(filter, game) >= 20;    
+        return player != null && player.getGraveyard().count(filter, game) >= 20;    
     }
 }