diff --git a/canvas/index.html b/canvas/index.html
index 35532d0..bc1e62d 100644
--- a/canvas/index.html
+++ b/canvas/index.html
@@ -2348,9 +2348,9 @@ <h3>Barycentric <font size="-1">(triangle gradient)</font></h3>The "<code>Baryce
                       <td>
                         <pre class="bg-light text-dark mx-4"><samp>
   magick -size 100x100 xc:none -draw "polygon 30,10  10,80  90,90" \
-          -colorspace RGB \
+          -colorspace RGB -channel rgb \
           -sparse-color Barycentric '30,10 red   10,80 blue   90,90 lime' \
-          -colorspace sRGB   sparse_bary_triangle_2.png
+          -colorspace sRGB  sparse_bary_triangle_2.png
 </samp></pre>
                       </td>
                     </tr>