diff --git a/breacharbiter.go b/breacharbiter.go
index 1771b81fa..0987e9b67 100644
--- a/breacharbiter.go
+++ b/breacharbiter.go
@@ -1050,13 +1050,13 @@ func (b *breachArbiter) createJusticeTx(
 		spendableOutputs = append(spendableOutputs, input)
 	}
 
-	txWeight := uint64(weightEstimate.Weight())
-	return b.sweepSpendableOutputsTxn(txWeight, spendableOutputs...)
+	txVSize := int64(weightEstimate.VSize())
+	return b.sweepSpendableOutputsTxn(txVSize, spendableOutputs...)
 }
 
 // sweepSpendableOutputsTxn creates a signed transaction from a sequence of
 // spendable outputs by sweeping the funds into a single p2wkh output.
-func (b *breachArbiter) sweepSpendableOutputsTxn(txWeight uint64,
+func (b *breachArbiter) sweepSpendableOutputsTxn(txVSize int64,
 	inputs ...SpendableOutput) (*wire.MsgTx, error) {
 
 	// First, we obtain a new public key script from the wallet which we'll
@@ -1076,11 +1076,11 @@ func (b *breachArbiter) sweepSpendableOutputsTxn(txWeight uint64,
 
 	// We'll actually attempt to target inclusion within the next two
 	// blocks as we'd like to sweep these funds back into our wallet ASAP.
-	feePerWeight, err := b.cfg.Estimator.EstimateFeePerWeight(2)
+	feePerVSize, err := b.cfg.Estimator.EstimateFeePerVSize(2)
 	if err != nil {
 		return nil, err
 	}
-	txFee := btcutil.Amount(txWeight * uint64(feePerWeight))
+	txFee := feePerVSize.FeeForVSize(txVSize)
 
 	// TODO(roasbeef): already start to siphon their funds into fees
 	sweepAmt := int64(totalAmt - txFee)