diff --git a/src/battle_ai_main.c b/src/battle_ai_main.c
index 79effbe76..732dea780 100644
--- a/src/battle_ai_main.c
+++ b/src/battle_ai_main.c
@@ -4393,10 +4393,13 @@ static s16 AI_CheckViability(u8 battlerAtk, u8 battlerDef, u16 move, s16 score)
         break;
     case EFFECT_RELIC_SONG:
         #if (defined SPECIES_MELOETTA && defined SPECIES_MELOETTA_PIROUETTE)
-        if (gBattleMons[battlerAtk].species == SPECIES_MELOETTA && gBattleMons[battlerDef].defense < gBattleMons[battlerDef].spDefense)
-            score += 3; // Change to pirouette if can do more damage
-        else if (gBattleMons[battlerAtk].species == SPECIES_MELOETTA_PIROUETTE && gBattleMons[battlerDef].spDefense < gBattleMons[battlerDef].defense)
-            score += 3; // Change to Aria if can do more damage
+        if (!(gBattleMons[battlerAtk].status2 & STATUS2_TRANSFORMED)) // Don't try to change form if it's transformed.
+        {
+            if (gBattleMons[battlerAtk].species == SPECIES_MELOETTA && gBattleMons[battlerDef].defense < gBattleMons[battlerDef].spDefense)
+                score += 3; // Change to Pirouette if can do more damage
+            else if (gBattleMons[battlerAtk].species == SPECIES_MELOETTA_PIROUETTE && gBattleMons[battlerDef].spDefense < gBattleMons[battlerDef].defense)
+                score += 3; // Change to Aria if can do more damage
+        }
         #endif
         break;
     case EFFECT_ELECTRIC_TERRAIN:
diff --git a/src/battle_script_commands.c b/src/battle_script_commands.c
index ba576a36a..a4f5ab9a6 100644
--- a/src/battle_script_commands.c
+++ b/src/battle_script_commands.c
@@ -3494,7 +3494,7 @@ void SetMoveEffect(bool32 primary, u32 certain)
                 }
                 break;
             case MOVE_EFFECT_RELIC_SONG:
-                if (GetBattlerAbility(gBattlerAttacker) != ABILITY_SHEER_FORCE)
+                if (GetBattlerAbility(gBattlerAttacker) != ABILITY_SHEER_FORCE && !(gBattleMons[gBattlerAttacker].status2 & STATUS2_TRANSFORMED))
                 {
                     if (gBattleMons[gBattlerAttacker].species == SPECIES_MELOETTA)
                     {
diff --git a/src/battle_util.c b/src/battle_util.c
index 4c3786f0c..45374249a 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -4072,6 +4072,9 @@ static bool32 ShouldChangeFormHpBased(u32 battler)
     u32 i;
     u16 battlerAbility = GetBattlerAbility(battler);
 
+    if (gBattleMons[battler].status2 & STATUS2_TRANSFORMED)
+        return FALSE;
+
     for (i = 0; i < ARRAY_COUNT(forms); i++)
     {
         if (battlerAbility == forms[i][0])