diff --git a/Mage/src/main/java/mage/abilities/effects/common/continuous/CastAsThoughItHadFlashAllEffect.java b/Mage/src/main/java/mage/abilities/effects/common/continuous/CastAsThoughItHadFlashAllEffect.java
index 62b29ff8e8b..6ee38dd5851 100644
--- a/Mage/src/main/java/mage/abilities/effects/common/continuous/CastAsThoughItHadFlashAllEffect.java
+++ b/Mage/src/main/java/mage/abilities/effects/common/continuous/CastAsThoughItHadFlashAllEffect.java
@@ -60,7 +60,7 @@ public class CastAsThoughItHadFlashAllEffect extends AsThoughEffectImpl {
     }
     @Override
     public boolean applies(UUID objectId, Ability source, UUID affectedControllerId, Game game) {
-        return false;
+        throw new IllegalArgumentException("Wrong code usage: can't call applies method on empty affectedAbility");
     }
 
     private String setText() {