diff --git a/calc/src/mechanics/gen56.ts b/calc/src/mechanics/gen56.ts
index 8cc5d5865..38d793388 100644
--- a/calc/src/mechanics/gen56.ts
+++ b/calc/src/mechanics/gen56.ts
@@ -865,12 +865,12 @@ export function calculateBWXY(
   }
 
   if (move.hits > 1) {
-    let defenderDefenseBoost = defender.boosts['def'];
+    let defenderDefBoost = defender.boosts['def'];
     for (let times = 0; times < move.hits; times++) {
       let damageMultiplier = 0;
       damage = damage.map(affectedAmount => {
         if (times) {
-          const newDefense = getModifiedStat(defense, defenderDefenseBoost);
+          const newDefense = getModifiedStat(defense, defenderDefBoost);
           const newFinalMods = calculateFinalModsBWXY(
             gen,
             attacker,
@@ -898,7 +898,8 @@ export function calculateBWXY(
         return affectedAmount;
       });
       if (hitsPhysical && defender.ability === 'Weak Armor') {
-        defenderDefenseBoost = Math.max(-6, defenderDefenseBoost - 1);
+        defenderDefBoost = Math.max(-6, defenderDefBoost - 1);
+        desc.defenderAbility = 'Weak Armor';
       }
     }
   }
diff --git a/calc/src/mechanics/gen789.ts b/calc/src/mechanics/gen789.ts
index 6014b5ce2..353df05ae 100644
--- a/calc/src/mechanics/gen789.ts
+++ b/calc/src/mechanics/gen789.ts
@@ -623,12 +623,12 @@ export function calculateSMSSSV(
   }
 
   if (move.hits > 1) {
-    let defenderDefenseBoost = defender.boosts['def'];
+    let defenderDefBoost = defender.boosts['def'];
     for (let times = 0; times < move.hits; times++) {
       let damageMultiplier = 0;
       damage = damage.map(affectedAmount => {
         if (times) {
-          const newDefense = getModifiedStat(defense, defenderDefenseBoost);
+          const newDefense = getModifiedStat(defense, defenderDefBoost);
           const newFinalMods = calculateFinalModsSMSSSV(
             gen,
             attacker,
@@ -660,9 +660,11 @@ export function calculateSMSSSV(
         return affectedAmount;
       });
       if (hitsPhysical && defender.ability === 'Stamina') {
-        defenderDefenseBoost = Math.min(6, defenderDefenseBoost + 1);
+        defenderDefBoost = Math.min(6, defenderDefBoost + 1);
+        desc.defenderAbility = 'Stamina';
       } else if (hitsPhysical && defender.ability === 'Weak Armor') {
-        defenderDefenseBoost = Math.max(-6, defenderDefenseBoost - 1);
+        defenderDefBoost = Math.max(-6, defenderDefBoost - 1);
+        desc.defenderAbility = 'Weak Armor';
       }
     }
   }