diff --git a/webapp/mt/Skill.php b/webapp/mt/Skill.php
index 93d9c412..f846e612 100644
--- a/webapp/mt/Skill.php
+++ b/webapp/mt/Skill.php
@@ -14,8 +14,8 @@ class Skill {
     }
 
     public static function getDefSkill(){
-        if (Parameter::getVal("hero_summoner_skill")){
-            return Parameter::getVal("hero_summoner_skill");
+        if (Parameter::getVal("hero_summoner_skill",'')){
+            return Parameter::getVal("hero_summoner_skill",'');
         }else{
             return self::DEFAULT_SKILL;
         }