diff --git a/src/ImageProcessorCore/Filters/BoxBlur.cs b/src/ImageProcessorCore/Filters/BoxBlur.cs
index 527950a20..e1970228f 100644
--- a/src/ImageProcessorCore/Filters/BoxBlur.cs
+++ b/src/ImageProcessorCore/Filters/BoxBlur.cs
@@ -1,6 +1,7 @@
 // <copyright file="BoxBlur.cs" company="James Jackson-South">
 // Copyright (c) James Jackson-South and contributors.
 // Licensed under the Apache License, Version 2.0.
+// </copyright>
 
 namespace ImageProcessorCore
 {