diff --git a/NzbDrone.Core/Providers/EpisodeProvider.cs b/NzbDrone.Core/Providers/EpisodeProvider.cs
index 4be99ddc3..248b8e739 100644
--- a/NzbDrone.Core/Providers/EpisodeProvider.cs
+++ b/NzbDrone.Core/Providers/EpisodeProvider.cs
@@ -34,17 +34,17 @@ namespace NzbDrone.Core.Providers
 
         public virtual Episode GetEpisode(long id)
         {
-            return _database.Single<Episode>(id);
+            return _database.SingleOrDefault<Episode>(id);
         }
 
         public virtual Episode GetEpisode(int seriesId, int seasonNumber, int episodeNumber)
         {
-            return _database.Single<Episode>("WHERE SeriesId = @0 AND SeasonNumber = @1 AND EpisodeNumber = @2", seriesId, seasonNumber, episodeNumber);
+            return _database.SingleOrDefault<Episode>("WHERE SeriesId = @0 AND SeasonNumber = @1 AND EpisodeNumber = @2", seriesId, seasonNumber, episodeNumber);
         }
 
         public virtual Episode GetEpisode(int seriesId, DateTime date)
         {
-            return _database.Single<Episode>("WHERE SeriesId = @0 AND AirDate = @1", seriesId, date.Date);
+            return _database.SingleOrDefault<Episode>("WHERE SeriesId = @0 AND AirDate = @1", seriesId, date.Date);
         }
 
         public virtual IList<Episode> GetEpisodeBySeries(long seriesId)
diff --git a/NzbDrone.Core/Providers/IndexerProvider.cs b/NzbDrone.Core/Providers/IndexerProvider.cs
index 48ad40431..292a37027 100644
--- a/NzbDrone.Core/Providers/IndexerProvider.cs
+++ b/NzbDrone.Core/Providers/IndexerProvider.cs
@@ -54,7 +54,7 @@ namespace NzbDrone.Core.Providers
 
         public virtual IndexerSetting GetSettings(Type type)
         {
-            return _database.Single<IndexerSetting>("WHERE IndexProviderType = @0", type.ToString());
+            return _database.SingleOrDefault<IndexerSetting>("WHERE IndexProviderType = @0", type.ToString());
         }
 
         public virtual void InitializeIndexers(IList<IndexerBase> indexers)
diff --git a/NzbDrone.Core/Providers/MediaFileProvider.cs b/NzbDrone.Core/Providers/MediaFileProvider.cs
index 8b2c39aad..fe15eedb5 100644
--- a/NzbDrone.Core/Providers/MediaFileProvider.cs
+++ b/NzbDrone.Core/Providers/MediaFileProvider.cs
@@ -196,7 +196,7 @@ namespace NzbDrone.Core.Providers
 
         public virtual EpisodeFile GetEpisodeFile(int episodeFileId)
         {
-            return _database.Single<EpisodeFile>(episodeFileId);
+            return _database.SingleOrDefault<EpisodeFile>(episodeFileId);
         }
 
         public virtual List<EpisodeFile> GetEpisodeFiles()
diff --git a/NzbDrone.Core/Providers/QualityProvider.cs b/NzbDrone.Core/Providers/QualityProvider.cs
index fc9fd5353..53529c5ef 100644
--- a/NzbDrone.Core/Providers/QualityProvider.cs
+++ b/NzbDrone.Core/Providers/QualityProvider.cs
@@ -53,7 +53,7 @@ namespace NzbDrone.Core.Providers
 
         public virtual QualityProfile Get(int profileId)
         {
-            return _database.Single<QualityProfile>(profileId);
+            return _database.SingleOrDefault<QualityProfile>(profileId);
         }
 
         public virtual void SetupDefaultProfiles()