diff --git a/include/battle.h b/include/battle.h
index 79413441c..01dc8d7e0 100644
--- a/include/battle.h
+++ b/include/battle.h
@@ -653,6 +653,7 @@ struct BattleStruct
     u8 targetsDone[MAX_BATTLERS_COUNT]; // Each battler as a bit.
     u16 overwrittenAbilities[MAX_BATTLERS_COUNT];    // abilities overwritten during battle (keep separate from battle history in case of switching)
     bool8 allowedToChangeFormInWeather[PARTY_SIZE][2]; // For each party member and side, used by Ice Face.
+    u8 battleBondTransformed[2]; // Bitfield for each party.
 };
 
 #define F_DYNAMIC_TYPE_1 (1 << 6)
diff --git a/src/battle_script_commands.c b/src/battle_script_commands.c
index d1c0a7c77..905bf2b61 100644
--- a/src/battle_script_commands.c
+++ b/src/battle_script_commands.c
@@ -9851,8 +9851,10 @@ static void Cmd_various(void)
     case VARIOUS_TRY_ACTIVATE_BATTLE_BOND:
         if (gBattleMons[gBattlerAttacker].species == SPECIES_GRENINJA_BATTLE_BOND
             && HasAttackerFaintedTarget()
-            && CalculateEnemyPartyCount() > 1)
+            && CalculateEnemyPartyCount() > 1
+            && !(gBattleStruct->battleBondTransformed[GET_BATTLER_SIDE2(gBattlerAttacker)] & gBitTable[gBattlerPartyIndexes[gBattlerAttacker]]))
         {
+            gBattleStruct->battleBondTransformed[GET_BATTLER_SIDE2(gBattlerAttacker)] |= gBitTable[gBattlerPartyIndexes[gBattlerAttacker]];
             PREPARE_SPECIES_BUFFER(gBattleTextBuff1, gBattleMons[gBattlerAttacker].species);
             gBattleStruct->changedSpecies[gBattlerPartyIndexes[gBattlerAttacker]] = gBattleMons[gBattlerAttacker].species;
             gBattleMons[gBattlerAttacker].species = SPECIES_GRENINJA_ASH;
@@ -14965,7 +14967,7 @@ static void Cmd_callnative(void)
     func();
 }
 
-// Callnative Funcs    
+// Callnative Funcs
 void BS_CalcMetalBurstDmg(void)
 {
     u8 sideAttacker = GetBattlerSide(gBattlerAttacker);