diff --git a/lib/online_art/online_art_service.dart b/lib/online_art/online_art_service.dart
index 1707a75..78615d1 100644
--- a/lib/online_art/online_art_service.dart
+++ b/lib/online_art/online_art_service.dart
@@ -59,9 +59,8 @@ class OnlineArtService {
   final _store = <String, String?>{};
 
   String? put({required String key, String? url}) {
-    return _store.containsKey(key)
-        ? _store.update(key, (value) => url)
-        : _store.putIfAbsent(key, () => url);
+    _store[key] = url;
+    return url;
   }
 
   String? get(String? icyTitle) => icyTitle == null ? null : _store[icyTitle];
diff --git a/lib/podcasts/podcast_service.dart b/lib/podcasts/podcast_service.dart
index 5000299..6bce91a 100644
--- a/lib/podcasts/podcast_service.dart
+++ b/lib/podcasts/podcast_service.dart
@@ -45,7 +45,7 @@ class PodcastService {
   }) async {
     SearchResult res;
     try {
-      if (searchQuery == null || searchQuery.isEmpty == true) {
+      if (searchQuery == null || searchQuery.isEmpty) {
         res = await _search.charts(
           genre: podcastGenre == PodcastGenre.all ? '' : podcastGenre.id,
           limit: limit,
@@ -65,7 +65,7 @@ class PodcastService {
           attribute: attribute,
         );
       }
-      if (res.successful == false) {
+      if (!res.successful) {
         throw Exception(
           'Search failed: ${res.lastError} ${res.lastErrorType.name}',
         );