diff --git a/channeldb/invoices.go b/channeldb/invoices.go
index 2be860a9..bc0f27bc 100644
--- a/channeldb/invoices.go
+++ b/channeldb/invoices.go
@@ -219,8 +219,7 @@ type Invoice struct {
 	// or any other message which fits within the size constraints.
 	Memo []byte
 
-	// PaymentRequest is an optional field where a payment request created
-	// for this invoice can be stored.
+	// PaymentRequest is the encoded payment request for this invoice.
 	PaymentRequest []byte
 
 	// CreationDate is the exact time the invoice was created.