diff --git a/schema/schema.go b/schema/schema.go
index 4f478381..bd45e781 100644
--- a/schema/schema.go
+++ b/schema/schema.go
@@ -15,7 +15,7 @@ const (
 	// Version of the current version of the schema
 	Version = "draft-0"
 	// BaseURL is the base URL for all GOBL schemas
-	BaseURL = "https://gobl.org"
+	BaseURL = "https://gobl.org/"
 	// GOBL stores the base schema ID for GOBL, including current schema version.
 	GOBL ID = BaseURL + Version
 )
diff --git a/tax/totals.go b/tax/totals.go
index 57e981e2..b2d7c151 100644
--- a/tax/totals.go
+++ b/tax/totals.go
@@ -64,8 +64,8 @@ func (ct *CategoryTotal) PreciseAmount() num.Amount {
 }
 
 // PreciseSum contains an intermediary sum generated from the calculator
-// with the original precision. If Calculate was not called on the totals, such
-// as when loading, the original sum will be provided instead.
+// with the original precision. If no calculations were made on the totals,
+// such as when loading, the original sum will be provided instead.
 func (t *Total) PreciseSum() num.Amount {
 	if !t.sum.IsZero() {
 		return t.sum