diff --git a/src/battle_util.c b/src/battle_util.c
index d302d2b7bdd0..de276beada2d 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -2929,7 +2929,7 @@ u8 DoBattlerEndTurnEffects(void)
         case ENDTURN_SEA_OF_FIRE_DAMAGE:
             if (IsBattlerAlive(battler) && gSideStatuses[GetBattlerSide(battler)] & SIDE_STATUS_SEA_OF_FIRE)
             {
-                gBattleMoveDamage = GetNonDynamaxMaxHP(battler) / 8;
+                gBattleMoveDamage = gBattleMons[battler].maxHP  / 8;
                 BtlController_EmitStatusAnimation(battler, BUFFER_A, FALSE, STATUS1_BURN);
                 MarkBattlerForControllerExec(battler);
                 BattleScriptExecute(BattleScript_HurtByTheSeaOfFire);