diff --git a/Aaru.Images/ByteAddressable/SegaMegaDrive.cs b/Aaru.Images/ByteAddressable/SegaMegaDrive.cs
index efcd588f7..18de2b3c5 100644
--- a/Aaru.Images/ByteAddressable/SegaMegaDrive.cs
+++ b/Aaru.Images/ByteAddressable/SegaMegaDrive.cs
@@ -352,7 +352,7 @@ public class SegaMegaDrive : IByteAddressableImage
     /// <inheritdoc />
     public IEnumerable<string> KnownExtensions => new[]
     {
-        ".smd", ".md", ".z64"
+        ".smd", ".md"
     };
     /// <inheritdoc />
     public IEnumerable<MediaTagType> SupportedMediaTags => Array.Empty<MediaTagType>();