diff --git a/dns.go b/dns.go
index f0b785b0..0086866f 100644
--- a/dns.go
+++ b/dns.go
@@ -93,7 +93,7 @@ type Error struct {
 
 func (e *Error) Error() string {
 	if e == nil {
-		return "<nil>"
+		return "dns: <nil>"
 	}
 	if e.Name == "" {
 		return e.Err
diff --git a/zscan.go b/zscan.go
index 1a6b8732..44b46160 100644
--- a/zscan.go
+++ b/zscan.go
@@ -66,7 +66,6 @@ type ParseError struct {
 }
 
 func (e *ParseError) Error() (s string) {
-	//	va := strconv.Itoa(e.lex.value)
 	if e.file != "" {
 		s = e.file + ": "
 	}