diff --git a/Mage.Sets/src/mage/sets/zendikar/MindlessNull.java b/Mage.Sets/src/mage/sets/zendikar/MindlessNull.java
index 387b3d4ceae..0c923b0a8c4 100644
--- a/Mage.Sets/src/mage/sets/zendikar/MindlessNull.java
+++ b/Mage.Sets/src/mage/sets/zendikar/MindlessNull.java
@@ -89,7 +89,7 @@ class MindlessNullEffect extends RestrictionEffect<MindlessNullEffect> {
     }
 
     @Override
-    public boolean canBlock(Permanent attacker, Permanent blocker, Game game) {
+    public boolean canBlock(Permanent attacker, Permanent blocker, Ability source, Game game) {
         return false;
     }