diff --git a/MediaBrowser.Model/Net/MimeTypes.cs b/MediaBrowser.Model/Net/MimeTypes.cs
index 506e8e9d63..3b03466e9d 100644
--- a/MediaBrowser.Model/Net/MimeTypes.cs
+++ b/MediaBrowser.Model/Net/MimeTypes.cs
@@ -116,7 +116,7 @@ namespace MediaBrowser.Model.Net
             { "audio/x-wavpack", ".wv" },
 
             // Type image
-            { "image/jpg", ".jpg" },
+            { "image/jpeg", ".jpg" },
             { "image/x-png", ".png" },
 
             // Type text
@@ -137,7 +137,7 @@ namespace MediaBrowser.Model.Net
         /// <param name="filename">The filename to find the MIME type of.</param>
         /// <param name="defaultValue">The default value to return if no fitting MIME type is found.</param>
         /// <returns>The correct MIME type for the given filename, or <paramref name="defaultValue"/> if it wasn't found.</returns>
-        [return: NotNullIfNotNullAttribute("defaultValue")]
+        [return: NotNullIfNotNull("defaultValue")]
         public static string? GetMimeType(string filename, string? defaultValue = null)
         {
             if (filename.Length == 0)
diff --git a/tests/Jellyfin.Model.Tests/Net/MimeTypesTests.cs b/tests/Jellyfin.Model.Tests/Net/MimeTypesTests.cs
index 55050cc954..cbab455f01 100644
--- a/tests/Jellyfin.Model.Tests/Net/MimeTypesTests.cs
+++ b/tests/Jellyfin.Model.Tests/Net/MimeTypesTests.cs
@@ -1,8 +1,3 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using MediaBrowser.Model.Net;
 using Xunit;
 
@@ -129,7 +124,7 @@ namespace Jellyfin.Model.Tests.Net
         [InlineData("font/woff2", ".woff2")]
         [InlineData("image/bmp", ".bmp")]
         [InlineData("image/gif", ".gif")]
-        [InlineData("image/jpg", ".jpg")]
+        [InlineData("image/jpeg", ".jpg")]
         [InlineData("image/png", ".png")]
         [InlineData("image/svg+xml", ".svg")]
         [InlineData("image/tiff", ".tif")]