diff --git a/hwe/sammo/Command/General/che_화계.php b/hwe/sammo/Command/General/che_화계.php
index 99993fc7..518b6461 100644
--- a/hwe/sammo/Command/General/che_화계.php
+++ b/hwe/sammo/Command/General/che_화계.php
@@ -94,7 +94,7 @@ class che_화계 extends Command\GeneralCommand
 
         $prob = $maxGenScore / GameConst::$sabotageProbCoefByStat;
         $prob += $probCorrection;
-        $prob += sqrt(count($destCityGeneralList)) * GameConst::$sabotageDefenceCoefByGeneralCnt;
+        $prob += (sqrt(count($destCityGeneralList)) - 1) * GameConst::$sabotageDefenceCoefByGeneralCnt;
 
         $prob += $destCity['secu'] / $destCity['secu_max'] / 5; //최대 20%p
         $prob += $destCity['supply'] ? 0.1 : 0;