        uint64 liquiditySum = 0;
        uint32 numPositions = 0;
        uint64 amountLeft = 0;

        // Get the number of allocated positions
        for (uint32 i = firstAvailablePositionAccountIndex; i < numPositionAccounts; ++i) {
            address positionAddress = positionAccounts[i];
            uint64 positionLiquidity = mapPositionAccountLiquidity[positionAddress];

            // Increase a total calculated liquidity and a number of positions to return
            liquiditySum += positionLiquidity;
            numPositions++;

            // Check if the accumulated liquidity is enough to cover the requested amount
            if (liquiditySum >= amount) {
                amountLeft = liquiditySum - amount;
                break;
            }
        }
        // Adjust the last position, if it was not fully allocated
        if (numPositions > 0 && amountLeft > 0) {
            positionAmounts[numPositions - 1] = amountLeft;
        }
@@ -374,7 +374,7 @@ contract liquidity_lockbox {
 
         // Adjust the last position, if it was not fully allocated
         if (numPositions > 0 && amountLeft > 0) {
-            positionAmounts[numPositions - 1] = amountLeft;
+            positionAmounts[numPositions - 1] -= amountLeft;
         }
     }
