diff --git a/src/ImageSharp/Formats/Jpeg/Components/Decoder/HuffmanTable.cs b/src/ImageSharp/Formats/Jpeg/Components/Decoder/HuffmanTable.cs
index 3f40068f0..24d570bf1 100644
--- a/src/ImageSharp/Formats/Jpeg/Components/Decoder/HuffmanTable.cs
+++ b/src/ImageSharp/Formats/Jpeg/Components/Decoder/HuffmanTable.cs
@@ -118,8 +118,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder
                 }
             }
 
-            // Ok to use pointer here as struct is declared in method stack space so are essentially pinned.
-            values.CopyTo(new Span<byte>(Unsafe.AsPointer(ref this.Values[0]), 256));
+            Unsafe.CopyBlockUnaligned(ref this.Values[0], ref MemoryMarshal.GetReference(values), 256);
         }
     }
 }
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