diff --git a/MediaBrowser.Controller/Drawing/IImageEncoder.cs b/MediaBrowser.Controller/Drawing/IImageEncoder.cs
index 4e640d4215..770c6dc2d2 100644
--- a/MediaBrowser.Controller/Drawing/IImageEncoder.cs
+++ b/MediaBrowser.Controller/Drawing/IImageEncoder.cs
@@ -1,4 +1,5 @@
 #pragma warning disable CS1591
+#nullable enable
 
 using System;
 using System.Collections.Generic;
diff --git a/MediaBrowser.Controller/Drawing/IImageProcessor.cs b/MediaBrowser.Controller/Drawing/IImageProcessor.cs
index cab73ed0c8..935a790312 100644
--- a/MediaBrowser.Controller/Drawing/IImageProcessor.cs
+++ b/MediaBrowser.Controller/Drawing/IImageProcessor.cs
@@ -1,4 +1,5 @@
 #pragma warning disable CS1591
+#nullable enable
 
 using System;
 using System.Collections.Generic;
@@ -75,7 +76,7 @@ namespace MediaBrowser.Controller.Drawing
         /// </summary>
         /// <param name="options">The options.</param>
         /// <returns>Task.</returns>
-        Task<(string path, string mimeType, DateTime dateModified)> ProcessImage(ImageProcessingOptions options);
+        Task<(string path, string? mimeType, DateTime dateModified)> ProcessImage(ImageProcessingOptions options);
 
         /// <summary>
         /// Gets the supported image output formats.