diff --git a/hwe/sammo/Scenario/GeneralBuilder.php b/hwe/sammo/Scenario/GeneralBuilder.php
index 3eac08d3..4fee435c 100644
--- a/hwe/sammo/Scenario/GeneralBuilder.php
+++ b/hwe/sammo/Scenario/GeneralBuilder.php
@@ -459,7 +459,7 @@ class GeneralBuilder{
             }
         }
 
-        if(!$this->dex1 && in_array('dex_t', $avgGen)){
+        if(!$this->dex1 && key_exists('dex_t', $avgGen)){
             $dexTotal = $avgGen['dex_t'];
             if ($pickType == '무') {
                 $dexVal = Util::choiceRandom([