diff --git a/mkht.php b/mkht.php
index 5705b15..7b94737 100755
--- a/mkht.php
+++ b/mkht.php
@@ -34,7 +34,7 @@ if (file_exists(SITE . '/config.ini'))
 $config['title'] ??= '';
 $config['css'] ??= 1;
 $config['header'] ??= false;
-$config['author'] ??= '';
+$config['author'] ??= NULL;
 $config['base-url'] ??= [];
 $config['center-index'] ??= false;
 $config['default-lang'] ??= NULL;
@@ -100,7 +100,7 @@ foreach ($config['base-url'] as $url)
 ?>
 	<updated><?= date('c', $files_dates[array_key_last($files_dates)]) ?></updated>
 	<author>
-		<name><?= $config['author'] ?></name>
+		<name><?= $config['author'] ?? '' ?></name>
 	</author>
 <?php
 $feed = ob_get_clean();
@@ -204,8 +204,10 @@ foreach ($files_dates as $src_page => $last_mod) {
 				?>
 				<meta name="viewport" content="width=device-width, initial-scale=1">
 				<meta name="referrer" content="no-referrer">
-				<meta name="author" content="<?= $config['author'] ?>">
 <?php
+		if (isset($config['author']))
+			echo '<meta name="author" content="' . $config['author'] . '">';
+
 		if ($config['announce-feed'])
 			echo '<link rel="alternate" type="application/atom+xml" href="' . $relativePathToRoot . 'feed.atom">' . LF;
 
@@ -273,7 +275,7 @@ foreach ($files_dates as $src_page => $last_mod) {
 		global $config;
 		global $path_parts;
 
-		return ' href="' . $config['base-url'][0] . substr($path_parts['dirname'], strlen(SITE)) . '/' . $matches['relative_url'] . '"';
+		return ' href="' . ($config['base-url'][0] ?? '') . substr($path_parts['dirname'], strlen(SITE)) . '/' . $matches['relative_url'] . '"';
 	}, $atom_entry_content);
 
 	if (!in_array('draft', explode('.', $path_parts['basename']), true)) {