diff --git a/lib/component/hentai.dart b/lib/component/hentai.dart
index 891007bf7..ba1a133bb 100644
--- a/lib/component/hentai.dart
+++ b/lib/component/hentai.dart
@@ -444,7 +444,8 @@ class HentaiManager {
             : 'n/a',
         'Groups': element.descripts!['group'] != null
             ? element.descripts!['group']!.join('|')
-            : null,
+            : 'n/a',
+        // ignore: prefer_null_aware_operators
         'Characters': element.descripts!['character'] != null
             ? element.descripts!['character']!.join('|')
             : null,
diff --git a/lib/component/hentai_download_manager.dart b/lib/component/hentai_download_manager.dart
index cc898ac15..b4a892b41 100644
--- a/lib/component/hentai_download_manager.dart
+++ b/lib/component/hentai_download_manager.dart
@@ -97,11 +97,11 @@ class HentaiDonwloadManager {
                 : target.groups() != null
                     ? target.groups().split('|').firstWhere((group) =>
                         group != null && (group as String).isNotEmpty)
-                    : null,
+                    : 'n/a',
             group: target.groups() != null
                 ? target.groups().split('|').firstWhere(
                     (group) => group != null && (group as String).isNotEmpty)
-                : null,
+                : 'n/a',
             extension: page.contains('fullimg.php')
                 ? 'jpg'
                 : path.extension(page.split('/').last).replaceAll('.', ''),