diff --git a/bytes/regexp.go b/bytes/regexp.go
index 89767e3..dd3d7d6 100644
--- a/bytes/regexp.go
+++ b/bytes/regexp.go
@@ -39,7 +39,6 @@ func (rr *RuneReader) ReadRune() (r rune, size int, err error) {
 		return 0, 0, io.EOF
 	}
 	s = s[:n]
-	fmt.Println("read bytes:", s)
 	r, size = utf8.DecodeRune(s)
 	rr.cursor = rr.cursor.At(rr.cursor.Pos() + uint64(size))
 	return r, size, nil