diff --git a/src/battle_ai_util.c b/src/battle_ai_util.c
index fae5f684d7..cb903dae54 100644
--- a/src/battle_ai_util.c
+++ b/src/battle_ai_util.c
@@ -2551,7 +2551,7 @@ bool32 ShouldPoisonSelf(u32 battler, u32 ability)
 bool32 AI_CanPoison(u32 battlerAtk, u32 battlerDef, u32 defAbility, u32 move, u32 partnerMove)
 {
     if (!AI_CanBePoisoned(battlerAtk, battlerDef, move)
-      || AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0
+      || AI_DATA->effectiveness[battlerAtk][battlerDef][AI_THINKING_STRUCT->movesetIndex] == AI_EFFECTIVENESS_x0
       || DoesSubstituteBlockMove(battlerAtk, battlerDef, move)
       || PartnerMoveEffectIsStatusSameTarget(BATTLE_PARTNER(battlerAtk), battlerDef, partnerMove))
         return FALSE;
@@ -2577,7 +2577,7 @@ static bool32 AI_CanBeParalyzed(u32 battler, u32 ability)
 bool32 AI_CanParalyze(u32 battlerAtk, u32 battlerDef, u32 defAbility, u32 move, u32 partnerMove)
 {
     if (!AI_CanBeParalyzed(battlerDef, defAbility)
-      || AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0
+      || AI_DATA->effectiveness[battlerAtk][battlerDef][AI_THINKING_STRUCT->movesetIndex] == AI_EFFECTIVENESS_x0
       || gSideStatuses[GetBattlerSide(battlerDef)] & SIDE_STATUS_SAFEGUARD
       || DoesSubstituteBlockMove(battlerAtk, battlerDef, move)
       || PartnerMoveEffectIsStatusSameTarget(BATTLE_PARTNER(battlerAtk), battlerDef, partnerMove))
@@ -2597,7 +2597,7 @@ bool32 AI_CanBeConfused(u32 battler, u32 ability)
 bool32 AI_CanConfuse(u32 battlerAtk, u32 battlerDef, u32 defAbility, u32 battlerAtkPartner, u32 move, u32 partnerMove)
 {
     if (!AI_CanBeConfused(battlerDef, defAbility)
-      || AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0
+      || AI_DATA->effectiveness[battlerAtk][battlerDef][AI_THINKING_STRUCT->movesetIndex] == AI_EFFECTIVENESS_x0
       || gSideStatuses[GetBattlerSide(battlerDef)] & SIDE_STATUS_SAFEGUARD
       || DoesSubstituteBlockMove(battlerAtk, battlerDef, move)
       || DoesPartnerHaveSameMoveEffect(battlerAtkPartner, battlerDef, move, partnerMove))
@@ -2650,7 +2650,7 @@ bool32 ShouldBurnSelf(u32 battler, u32 ability)
 bool32 AI_CanBurn(u32 battlerAtk, u32 battlerDef, u32 defAbility, u32 battlerAtkPartner, u32 move, u32 partnerMove)
 {
     if (!AI_CanBeBurned(battlerDef, defAbility)
-      || AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0
+      || AI_DATA->effectiveness[battlerAtk][battlerDef][AI_THINKING_STRUCT->movesetIndex] == AI_EFFECTIVENESS_x0
       || DoesSubstituteBlockMove(battlerAtk, battlerDef, move)
       || PartnerMoveEffectIsStatusSameTarget(battlerAtkPartner, battlerDef, partnerMove))
     {
@@ -2662,7 +2662,7 @@ bool32 AI_CanBurn(u32 battlerAtk, u32 battlerDef, u32 defAbility, u32 battlerAtk
 bool32 AI_CanGiveFrostbite(u32 battlerAtk, u32 battlerDef, u32 defAbility, u32 battlerAtkPartner, u32 move, u32 partnerMove)
 {
     if (!AI_CanGetFrostbite(battlerDef, defAbility)
-      || AI_GetMoveEffectiveness(move, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0
+      || AI_DATA->effectiveness[battlerAtk][battlerDef][AI_THINKING_STRUCT->movesetIndex] == AI_EFFECTIVENESS_x0
       || DoesSubstituteBlockMove(battlerAtk, battlerDef, move)
       || PartnerMoveEffectIsStatusSameTarget(battlerAtkPartner, battlerDef, partnerMove))
     {
@@ -2674,7 +2674,7 @@ bool32 AI_CanGiveFrostbite(u32 battlerAtk, u32 battlerDef, u32 defAbility, u32 b
 bool32 AI_CanBeInfatuated(u32 battlerAtk, u32 battlerDef, u32 defAbility)
 {
     if ((gBattleMons[battlerDef].status2 & STATUS2_INFATUATION)
-      || AI_GetMoveEffectiveness(AI_THINKING_STRUCT->moveConsidered, battlerAtk, battlerDef) == AI_EFFECTIVENESS_x0
+      || AI_DATA->effectiveness[battlerAtk][battlerDef][AI_THINKING_STRUCT->movesetIndex] == AI_EFFECTIVENESS_x0
       || defAbility == ABILITY_OBLIVIOUS
       || !AreBattlersOfOppositeGender(battlerAtk, battlerDef)
       || AI_IsAbilityOnSide(battlerDef, ABILITY_AROMA_VEIL))