diff --git a/mempool/policy.go b/mempool/policy.go
index f4e3b51e..7e973293 100644
--- a/mempool/policy.go
+++ b/mempool/policy.go
@@ -61,7 +61,7 @@ const (
 func calcMinRequiredTxRelayFee(serializedSize int64, minRelayTxFee btcutil.Amount) int64 {
 	// Calculate the minimum fee for a transaction to be allowed into the
 	// mempool and relayed by scaling the base fee (which is the minimum
-	// free transaction relay fee).  minTxRelayFee is in Satoshi/kB so
+	// free transaction relay fee).  minRelayTxFee is in Satoshi/kB so
 	// multiply by serializedSize (which is in bytes) and divide by 1000 to
 	// get minimum Satoshis.
 	minFee := (serializedSize * int64(minRelayTxFee)) / 1000