diff --git a/src/battle_ai_switch_items.c b/src/battle_ai_switch_items.c
index 9136d667c..0d394c3b8 100644
--- a/src/battle_ai_switch_items.c
+++ b/src/battle_ai_switch_items.c
@@ -602,39 +602,39 @@ static u32 GetBestMonBatonPass(struct Pokemon *party, int firstId, int lastId, u
     return PARTY_SIZE;
 }
 
-static u32 GestBestMonOffensive(struct Pokemon *party, int firstId, int lastId, u8 invalidMons, u32 opposingBattler)
+static u32 GestBestMonTypeMatchup(struct Pokemon *party, int firstId, int lastId, u8 invalidMons, u32 opposingBattler)
 {
     int i, bits = 0;
 
     while (bits != 0x3F) // All mons were checked.
     {
-        int bestDmg = 0;
+        u32 bestResist = UQ_4_12(1.0);
         int bestMonId = PARTY_SIZE;
-        // Find the mon whose type is the most suitable offensively.
+        // Find the mon whose type is the most suitable defensively.
         for (i = firstId; i < lastId; i++)
         {
             if (!(gBitTable[i] & invalidMons) && !(gBitTable[i] & bits))
             {
                 u16 species = GetMonData(&party[i], MON_DATA_SPECIES);
-                u32 typeDmg = UQ_4_12(1.0);
+                u32 typeEffectiveness = UQ_4_12(1.0);
 
-                u8 atkType1 = gBaseStats[species].type1;
-                u8 atkType2 = gBaseStats[species].type2;
-                u8 defType1 = gBattleMons[opposingBattler].type1;
-                u8 defType2 = gBattleMons[opposingBattler].type2;
+                u8 atkType1 = gBattleMons[opposingBattler].type1;
+                u8 atkType2 = gBattleMons[opposingBattler].type2;
+                u8 defType1 = gBaseStats[species].type1;
+                u8 defType2 = gBaseStats[species].type2;
 
-                typeDmg *= GetTypeModifier(atkType1, defType1);
+                typeEffectiveness *= GetTypeModifier(atkType1, defType1);
                 if (atkType2 != atkType1)
-                    typeDmg *= GetTypeModifier(atkType2, defType1);
+                    typeEffectiveness *= GetTypeModifier(atkType2, defType1);
                 if (defType2 != defType1)
                 {
-                    typeDmg *= GetTypeModifier(atkType1, defType2);
+                    typeEffectiveness *= GetTypeModifier(atkType1, defType2);
                     if (atkType2 != atkType1)
-                        typeDmg *= GetTypeModifier(atkType2, defType2);
+                        typeEffectiveness *= GetTypeModifier(atkType2, defType2);
                 }
-                if (bestDmg < typeDmg)
+                if (typeEffectiveness < bestResist)
                 {
-                    bestDmg = typeDmg;
+                    bestResist = typeEffectiveness;
                     bestMonId = i;
                 }
             }
@@ -698,7 +698,6 @@ static u32 GetBestMonDmg(struct Pokemon *party, int firstId, int lastId, u8 inva
 u8 GetMostSuitableMonToSwitchInto(void)
 {
     u32 opposingBattler = 0;
-    u32 bestDmg = 0;
     u32 bestMonId = 0;
     u8 battlerIn1 = 0, battlerIn2 = 0;
     s32 firstId = 0;
@@ -757,7 +756,7 @@ u8 GetMostSuitableMonToSwitchInto(void)
     if (bestMonId != PARTY_SIZE)
         return bestMonId;
 
-    bestMonId = GestBestMonOffensive(party, firstId, lastId, invalidMons, opposingBattler);
+    bestMonId = GestBestMonTypeMatchup(party, firstId, lastId, invalidMons, opposingBattler);
     if (bestMonId != PARTY_SIZE)
         return bestMonId;