diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index f22944a8b6..d69e6330bb 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -30,6 +30,7 @@
  - [Khinenw](https://github.com/HelloWorld017)
  - [fhriley](https://github.com/fhriley)
  - [nevado](https://github.com/nevado)
+ - [mark-monteiro](https://github.com/mark-monteiro)
 
 # Emby Contributors
 
diff --git a/MediaBrowser.Providers/TV/TheTVDB/TvdbEpisodeProvider.cs b/MediaBrowser.Providers/TV/TheTVDB/TvdbEpisodeProvider.cs
index e5287048dc..4269d34201 100644
--- a/MediaBrowser.Providers/TV/TheTVDB/TvdbEpisodeProvider.cs
+++ b/MediaBrowser.Providers/TV/TheTVDB/TvdbEpisodeProvider.cs
@@ -35,9 +35,8 @@ namespace MediaBrowser.Providers.TV.TheTVDB
         {
             var list = new List<RemoteSearchResult>();
 
-            // The search query must either provide an episode number or date
-            if (!searchInfo.IndexNumber.HasValue
-                || !searchInfo.PremiereDate.HasValue
+            // Either an episode number or date must be provided; and the dictionary of provider ids must be valid
+            if ((searchInfo.IndexNumber == null && searchInfo.PremiereDate == null)
                 || !TvdbSeriesProvider.IsValidSeries(searchInfo.SeriesProviderIds))
             {
                 return list;
diff --git a/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesProvider.cs b/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesProvider.cs
index 10ed4f0731..72ceadaf1d 100644
--- a/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesProvider.cs
+++ b/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesProvider.cs
@@ -170,11 +170,16 @@ namespace MediaBrowser.Providers.TV.TheTVDB
             return result?.Data.First().Id.ToString();
         }
 
+        /// <summary>
+        /// Check whether a dictionary of provider IDs includes an entry for a valid TV metadata provider.
+        /// </summary>
+        /// <param name="seriesProviderIds">The dictionary to check.</param>
+        /// <returns>True, if the dictionary contains a valid TV provider ID, otherwise false.</returns>
         internal static bool IsValidSeries(Dictionary<string, string> seriesProviderIds)
         {
-            return seriesProviderIds.TryGetValue(MetadataProviders.Tvdb.ToString(), out _) ||
-                   seriesProviderIds.TryGetValue(MetadataProviders.Imdb.ToString(), out _) ||
-                   seriesProviderIds.TryGetValue(MetadataProviders.Zap2It.ToString(), out _);
+            return seriesProviderIds.ContainsKey(MetadataProviders.Tvdb.ToString()) ||
+                   seriesProviderIds.ContainsKey(MetadataProviders.Imdb.ToString()) ||
+                   seriesProviderIds.ContainsKey(MetadataProviders.Zap2It.ToString());
         }
 
         /// <summary>