diff --git a/src/ImageSharp/Formats/Gif/Sections/GifGraphicControlExtension.cs b/src/ImageSharp/Formats/Gif/Sections/GifGraphicControlExtension.cs
index ba5398fa7d..0352d7447f 100644
--- a/src/ImageSharp/Formats/Gif/Sections/GifGraphicControlExtension.cs
+++ b/src/ImageSharp/Formats/Gif/Sections/GifGraphicControlExtension.cs
@@ -1,5 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
+#nullable disable
 
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;