diff --git a/MediaBrowser.Common/Configuration/IConfigurationManager.cs b/MediaBrowser.Common/Configuration/IConfigurationManager.cs
index 4c2b3a742..790121274 100644
--- a/MediaBrowser.Common/Configuration/IConfigurationManager.cs
+++ b/MediaBrowser.Common/Configuration/IConfigurationManager.cs
@@ -56,6 +56,8 @@ namespace MediaBrowser.Common.Configuration
         /// <summary>
         /// Gets the configuration.
         /// </summary>
+        /// /// <param name="key">The key.</param>
+        /// <returns>System.Object.</returns>
         object GetConfiguration(string key);
 
         /// <summary>
diff --git a/MediaBrowser.Common/Net/IPNetAddress.cs b/MediaBrowser.Common/Net/IPNetAddress.cs
index bcd049f3d..0d28c35cb 100644
--- a/MediaBrowser.Common/Net/IPNetAddress.cs
+++ b/MediaBrowser.Common/Net/IPNetAddress.cs
@@ -106,7 +106,7 @@ namespace MediaBrowser.Common.Net
                 addr = addr.Trim();
 
                 // Try to parse it as is.
-                if (IPAddress.TryParse(addr, out IPAddress res))
+                if (IPAddress.TryParse(addr, out IPAddress? res))
                 {
                     ip = new IPNetAddress(res);
                     return true;
@@ -130,7 +130,7 @@ namespace MediaBrowser.Common.Net
                         }
 
                         // Is the subnet in x.y.a.b form?
-                        if (IPAddress.TryParse(tokens[1], out IPAddress mask))
+                        if (IPAddress.TryParse(tokens[1], out IPAddress? mask))
                         {
                             ip = new IPNetAddress(res, MaskToCidr(mask));
                             return true;
diff --git a/MediaBrowser.Common/Net/IPObject.cs b/MediaBrowser.Common/Net/IPObject.cs
index a08694c26..36f3357cc 100644
--- a/MediaBrowser.Common/Net/IPObject.cs
+++ b/MediaBrowser.Common/Net/IPObject.cs
@@ -381,7 +381,7 @@ namespace MediaBrowser.Common.Net
         }
 
         /// <inheritdoc/>
-        public override bool Equals(object obj)
+        public override bool Equals(object? obj)
         {
             return Equals(obj as IPObject);
         }
diff --git a/MediaBrowser.Controller/IServerApplicationHost.cs b/MediaBrowser.Controller/IServerApplicationHost.cs
index eced9bf69..2456da826 100644
--- a/MediaBrowser.Controller/IServerApplicationHost.cs
+++ b/MediaBrowser.Controller/IServerApplicationHost.cs
@@ -8,6 +8,7 @@ using System.Threading.Tasks;
 using MediaBrowser.Common;
 using MediaBrowser.Common.Plugins;
 using MediaBrowser.Model.System;
+using Microsoft.AspNetCore.Http;
 
 namespace MediaBrowser.Controller
 {