diff --git a/src/commonMain/kotlin/exchange.dydx.abacus/calculator/V2/AdjustIsolatedMarginInputCalculatorV2.kt b/src/commonMain/kotlin/exchange.dydx.abacus/calculator/V2/AdjustIsolatedMarginInputCalculatorV2.kt
index 48a12c876..c3dc8442a 100644
--- a/src/commonMain/kotlin/exchange.dydx.abacus/calculator/V2/AdjustIsolatedMarginInputCalculatorV2.kt
+++ b/src/commonMain/kotlin/exchange.dydx.abacus/calculator/V2/AdjustIsolatedMarginInputCalculatorV2.kt
@@ -88,7 +88,7 @@ internal class AdjustIsolatedMarginInputCalculatorV2(
 
         if (inputType != null) {
             val notionalTotal = childSubaccount?.calculated?.get(CalculationPeriod.current)?.notionalTotal ?: return modified
-            val equity = childSubaccount.calculated?.get(CalculationPeriod.current)?.equity
+            val equity = childSubaccount.calculated[CalculationPeriod.current]?.equity
             val availableCollateralToTransfer = parentSubaccount?.calculated?.get(CalculationPeriod.current)?.freeCollateral
 
             val baseAmount = when (type) {