diff --git a/hwe/sammo/Constraint/ExistsDestNation.php b/hwe/sammo/Constraint/ExistsDestNation.php
index 4e08e1e4..db442c6a 100644
--- a/hwe/sammo/Constraint/ExistsDestNation.php
+++ b/hwe/sammo/Constraint/ExistsDestNation.php
@@ -1,27 +1,27 @@
-<?php
-
-namespace sammo\Constraint;
-
-class ExistsDestNation extends Constraint{
-    const REQ_VALUES = Constraint::REQ_DEST_NATION;
-
-    public function checkInputValues(bool $throwExeception=true):bool{
-        if(!parent::checkInputValues($throwExeception) && !$throwExeception){
-            return false;
-        }
-
-        return true;
-    }
-
-    public function test():bool{
-        $this->checkInputValues();
-        $this->tested = true;
-
-        if($this->destNation['nation']){
-            return true;
-        }
-
-        $this->reason = "멸망한 국가입니다.";
-        return false;
-    }
+<?php
+
+namespace sammo\Constraint;
+
+class ExistsDestNation extends Constraint{
+    const REQ_VALUES = 0;
+
+    public function checkInputValues(bool $throwExeception=true):bool{
+        if(!parent::checkInputValues($throwExeception) && !$throwExeception){
+            return false;
+        }
+
+        return true;
+    }
+
+    public function test():bool{
+        $this->checkInputValues();
+        $this->tested = true;
+
+        if($this->destNation['nation']??0){
+            return true;
+        }
+
+        $this->reason = "멸망한 국가입니다.";
+        return false;
+    }
 }
\ No newline at end of file