diff --git a/include/battle.h b/include/battle.h
index 5658f603cf..930578a50a 100644
--- a/include/battle.h
+++ b/include/battle.h
@@ -475,7 +475,6 @@ struct MegaEvolutionData
     bool8 playerSelect;
     u8 triggerSpriteId;
     bool8 isWishMegaEvo;
-    bool8 isPrimalReversion;
 };
 
 struct Illusion
diff --git a/include/battle_util.h b/include/battle_util.h
index b1a2a15347..ba4f203362 100644
--- a/include/battle_util.h
+++ b/include/battle_util.h
@@ -127,6 +127,7 @@ u16 CalcPartyMonTypeEffectivenessMultiplier(u16 move, u16 speciesDef, u16 abilit
 u16 GetTypeModifier(u8 atkType, u8 defType);
 s32 GetStealthHazardDamage(u8 hazardType, u8 battlerId);
 u16 GetMegaEvolutionSpecies(u16 preEvoSpecies, u16 heldItemId);
+u16 GetPrimalReversionSpecies(u16 preEvoSpecies, u16 heldItemId);
 u16 GetWishMegaEvolutionSpecies(u16 preEvoSpecies, u16 moveId1, u16 moveId2, u16 moveId3, u16 moveId4);
 bool32 CanMegaEvolve(u8 battlerId);
 void UndoMegaEvolution(u32 monId);
diff --git a/src/battle_main.c b/src/battle_main.c
index 7667360488..028237aa4d 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -64,6 +64,8 @@
 #include "constants/trainers.h"
 #include "cable_club.h"
 
+extern struct Evolution gEvolutionTable[][EVOS_PER_MON];
+
 extern struct MusicPlayerInfo gMPlayInfo_SE1;
 extern struct MusicPlayerInfo gMPlayInfo_SE2;
 
@@ -3541,12 +3543,18 @@ static void TryDoEventsBeforeFirstTurn(void)
     // Primal Reversion
     for (i = 0; i < gBattlersCount; i++)
     {
-        if (CanMegaEvolve(i)
-         && GetBattlerHoldEffect(i, TRUE) == HOLD_EFFECT_PRIMAL_ORB)
+        if (GetBattlerHoldEffect(i, TRUE) == HOLD_EFFECT_PRIMAL_ORB)
         {
-            gBattlerAttacker = i;
-            BattleScriptExecute(BattleScript_PrimalReversion);
-            return;
+            for (j = 0; j < EVOS_PER_MON; j++)
+            {
+                if (gEvolutionTable[gBattleMons[i].species][j].targetSpecies != SPECIES_NONE
+                 && gEvolutionTable[gBattleMons[i].species][j].method == EVO_PRIMAL_REVERSION)
+                {
+                    gBattlerAttacker = i;
+                    BattleScriptExecute(BattleScript_PrimalReversion);
+                    return;
+                }
+            }
         }
     }
     
diff --git a/src/battle_script_commands.c b/src/battle_script_commands.c
index 8c328926df..640e75ed8f 100644
--- a/src/battle_script_commands.c
+++ b/src/battle_script_commands.c
@@ -8331,7 +8331,7 @@ static void Cmd_various(void)
                 gBattleStruct->mega.playerPrimalRevertedSpecies = gBattleStruct->mega.primalRevertedSpecies[gActiveBattler];
             }
             // Checks Primal Reversion
-            primalSpecies = GetMegaEvolutionSpecies(gBattleStruct->mega.primalRevertedSpecies[gActiveBattler], gBattleMons[gActiveBattler].item);
+            primalSpecies = GetPrimalReversionSpecies(gBattleStruct->mega.primalRevertedSpecies[gActiveBattler], gBattleMons[gActiveBattler].item);
 
             gBattleMons[gActiveBattler].species = primalSpecies;
             PREPARE_SPECIES_BUFFER(gBattleTextBuff1, gBattleMons[gActiveBattler].species);
diff --git a/src/battle_util.c b/src/battle_util.c
index 725814a0d4..3b95bb84cd 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -9081,8 +9081,20 @@ u16 GetMegaEvolutionSpecies(u16 preEvoSpecies, u16 heldItemId)
 
     for (i = 0; i < EVOS_PER_MON; i++)
     {
-        if ((gEvolutionTable[preEvoSpecies][i].method == EVO_MEGA_EVOLUTION
-         || gEvolutionTable[preEvoSpecies][i].method == EVO_PRIMAL_REVERSION)
+        if (gEvolutionTable[preEvoSpecies][i].method == EVO_MEGA_EVOLUTION
+         && gEvolutionTable[preEvoSpecies][i].param == heldItemId)
+            return gEvolutionTable[preEvoSpecies][i].targetSpecies;
+    }
+    return SPECIES_NONE;
+}
+
+u16 GetPrimalReversionSpecies(u16 preEvoSpecies, u16 heldItemId)
+{
+    u32 i;
+
+    for (i = 0; i < EVOS_PER_MON; i++)
+    {
+        if (gEvolutionTable[preEvoSpecies][i].method == EVO_PRIMAL_REVERSION
          && gEvolutionTable[preEvoSpecies][i].param == heldItemId)
             return gEvolutionTable[preEvoSpecies][i].targetSpecies;
     }
@@ -9153,14 +9165,6 @@ bool32 CanMegaEvolve(u8 battlerId)
             gBattleStruct->mega.isWishMegaEvo = FALSE;
             return TRUE;
         }
-
-        // Can undergo Primal Reversion.
-        if (holdEffect == HOLD_EFFECT_PRIMAL_ORB)
-        {
-            gBattleStruct->mega.isWishMegaEvo = FALSE;
-            gBattleStruct->mega.isPrimalReversion = TRUE;
-            return TRUE;
-        }
     }
 
     // Check if there is an entry in the evolution table for Wish Mega Evolution.
@@ -9264,9 +9268,8 @@ bool32 CanBattlerGetOrLoseItem(u8 battlerId, u16 itemId)
     // Mail can be stolen now
     if (itemId == ITEM_ENIGMA_BERRY)
         return FALSE;
-    else if (GET_BASE_SPECIES_ID(species) == SPECIES_KYOGRE && itemId == ITEM_BLUE_ORB) // includes primal
-        return FALSE;
-    else if (GET_BASE_SPECIES_ID(species) == SPECIES_GROUDON && itemId == ITEM_RED_ORB) // includes primal
+    // Primal Reversion inducing items cannot be lost if pokemon's base species can undergo primal reversion with it.
+    else if (holdEffect == HOLD_EFFECT_PRIMAL_ORB && (GetPrimalReversionSpecies(GET_BASE_SPECIES_ID(species), itemId) != SPECIES_NONE))
         return FALSE;
     // Mega stone cannot be lost if pokemon's base species can mega evolve with it.
     else if (holdEffect == HOLD_EFFECT_MEGA_STONE && (GetMegaEvolutionSpecies(GET_BASE_SPECIES_ID(species), itemId) != SPECIES_NONE))