diff --git a/src/ImageSharp/Formats/Gif/GifEncoderCore.cs b/src/ImageSharp/Formats/Gif/GifEncoderCore.cs
index c861e2c961..23e6ed094f 100644
--- a/src/ImageSharp/Formats/Gif/GifEncoderCore.cs
+++ b/src/ImageSharp/Formats/Gif/GifEncoderCore.cs
@@ -583,7 +583,7 @@ internal sealed class GifEncoderCore : IImageEncoderInternals
         if (metadata is null)
         {
             metadata = new();
-            hasTransparency = transparencyIndex > -1;
+            hasTransparency = transparencyIndex >= 0;
         }
         else
         {