diff --git a/NzbDrone.Core/Providers/EpisodeProvider.cs b/NzbDrone.Core/Providers/EpisodeProvider.cs
index 248b8e739..cf065a301 100644
--- a/NzbDrone.Core/Providers/EpisodeProvider.cs
+++ b/NzbDrone.Core/Providers/EpisodeProvider.cs
@@ -34,7 +34,7 @@ namespace NzbDrone.Core.Providers
 
         public virtual Episode GetEpisode(long id)
         {
-            return _database.SingleOrDefault<Episode>(id);
+            return _database.Single<Episode>(id);
         }
 
         public virtual Episode GetEpisode(int seriesId, int seasonNumber, int episodeNumber)
diff --git a/NzbDrone.Core/Providers/IndexerProvider.cs b/NzbDrone.Core/Providers/IndexerProvider.cs
index 292a37027..48ad40431 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.SingleOrDefault<IndexerSetting>("WHERE IndexProviderType = @0", type.ToString());
+            return _database.Single<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 fe15eedb5..8b2c39aad 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.SingleOrDefault<EpisodeFile>(episodeFileId);
+            return _database.Single<EpisodeFile>(episodeFileId);
         }
 
         public virtual List<EpisodeFile> GetEpisodeFiles()
diff --git a/NzbDrone.Core/Providers/QualityProvider.cs b/NzbDrone.Core/Providers/QualityProvider.cs
index 53529c5ef..fc9fd5353 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.SingleOrDefault<QualityProfile>(profileId);
+            return _database.Single<QualityProfile>(profileId);
         }
 
         public virtual void SetupDefaultProfiles()