diff --git a/hosts/comment-reader.go b/hosts/comment-reader.go
index 14673f4..648c0c2 100644
--- a/hosts/comment-reader.go
+++ b/hosts/comment-reader.go
@@ -9,17 +9,16 @@ type CommentReader struct {
 	r    io.Reader
 	over []byte
 	mark byte
-	hit  bool
 }
 
 var _ io.Reader = &CommentReader{}
 
 func NewCommentReader(r io.Reader, mark byte) *CommentReader {
-	return &CommentReader{r, nil, mark, false}
+	return &CommentReader{r, nil, mark}
 }
 
 func (c *CommentReader) Read(p []byte) (n int, err error) {
-	if c.hit {
+	if c.over != nil {
 		return 0, io.EOF
 	}
 	n, err = c.r.Read(p)