diff --git a/typeChart.py b/typeChart.py
index 6b95be4..7dfeffc 100644
--- a/typeChart.py
+++ b/typeChart.py
@@ -27,6 +27,7 @@ def __init__(self, weak, resist, immune):
 
 def match(attackType,defenseType):
   attackT = [tNormal,tFighting,tFlying,tBug,tGrass,tFire,tWater,tElectric,tGround,tRock,tSteel,tPoison,tGhost,tDark,tFairy,tPsychic,tDragon,tIce][attackType]
+  defenseT = []
   defenseT[0] = [tNormal,tFighting,tFlying,tBug,tGrass,tFire,tWater,tElectric,tGround,tRock,tSteel,tPoison,tGhost,tDark,tFairy,tPsychic,tDragon,tIce][defenseType]
   if len(defenseT) > 1:
     defenseT[1] = [tNormal,tFighting,tFlying,tBug,tGrass,tFire,tWater,tElectric,tGround,tRock,tSteel,tPoison,tGhost,tDark,tFairy,tPsychic,tDragon,tIce][defenseType]