4 files changed, 6 insertions, 7 deletions
diff --git a/MediaBrowser.Model/Dlna/StreamBuilder.cs b/MediaBrowser.Model/Dlna/StreamBuilder.cs
index 6c6e09ab1c..586e322e48 100644
--- a/MediaBrowser.Model/Dlna/StreamBuilder.cs
+++ b/MediaBrowser.Model/Dlna/StreamBuilder.cs
@@ -297,7 +297,7 @@ namespace MediaBrowser.Model.Dlna
             int? inputAudioChannels = audioStream?.Channels;
             int? inputAudioBitrate = audioStream?.BitDepth;
             int? inputAudioSampleRate = audioStream?.SampleRate;
-            int? inputAudioBitDepth = audioStream.BitDepth;
+            int? inputAudioBitDepth = audioStream?.BitDepth;
 
             if (directPlayMethods.Count() > 0)
             {
diff --git a/MediaBrowser.Model/IO/IFileSystem.cs b/MediaBrowser.Model/IO/IFileSystem.cs
index 6c9b2bd883..e0771245fd 100644
--- a/MediaBrowser.Model/IO/IFileSystem.cs
+++ b/MediaBrowser.Model/IO/IFileSystem.cs
@@ -113,8 +113,6 @@ namespace MediaBrowser.Model.IO
         Stream GetFileStream(string path, FileOpenMode mode, FileAccessMode access, FileShareMode share,
             FileOpenOptions fileOpenOptions);
 
-        string DefaultDirectory { get; }
-
         /// <summary>
         /// Swaps the files.
         /// </summary>
diff --git a/MediaBrowser.Model/System/PublicSystemInfo.cs b/MediaBrowser.Model/System/PublicSystemInfo.cs
index accdc9e601..d97eda3523 100644
--- a/MediaBrowser.Model/System/PublicSystemInfo.cs
+++ b/MediaBrowser.Model/System/PublicSystemInfo.cs
@@ -24,12 +24,12 @@ namespace MediaBrowser.Model.System
         /// Gets or sets the server version.
         /// </summary>
         /// <value>The version.</value>
-        public string Version { get; set; }        
+        public string Version { get; set; }
 
         /// <summary>
-        /// Gets or sets the operating sytem.
+        /// Gets or sets the operating system.
         /// </summary>
-        /// <value>The operating sytem.</value>
+        /// <value>The operating system.</value>
         public string OperatingSystem { get; set; }
 
         /// <summary>
diff --git a/MediaBrowser.Model/System/SystemInfo.cs b/MediaBrowser.Model/System/SystemInfo.cs
index 26f7353307..d9ed68b27e 100644
--- a/MediaBrowser.Model/System/SystemInfo.cs
+++ b/MediaBrowser.Model/System/SystemInfo.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Runtime.InteropServices;
 using MediaBrowser.Model.Updates;
 
@@ -136,7 +137,7 @@ namespace MediaBrowser.Model.System
         /// </summary>
         public SystemInfo()
         {
-            CompletedInstallations = new InstallationInfo[] { };
+            CompletedInstallations = Array.Empty<InstallationInfo>();
         }
     }
 }