diff --git a/src/ImageSharp/Configuration.cs b/src/ImageSharp/Configuration.cs
index 241946b6d8..3e021dda8d 100644
--- a/src/ImageSharp/Configuration.cs
+++ b/src/ImageSharp/Configuration.cs
@@ -124,7 +124,7 @@ namespace SixLabors.ImageSharp
         /// <summary>
         /// Gets or the <see cref="ImageFormatManager"/> that is currently in use.
         /// </summary>
-        public ImageFormatManager ImageFormatsManager { get; } = new ImageFormatManager();
+        public ImageFormatManager ImageFormatsManager { get; private set; } = new ImageFormatManager();
 
         /// <summary>
         /// Gets or sets the <see cref="Memory.MemoryAllocator"/> that is currently in use.