ImageMagick
diff --git a/‎assets/bootstrap.bundle.min.js
+3-3 b/‎assets/bootstrap.bundle.min.js
+3-3
diff --git a/‎assets/bootstrap.min.css
+3-4 b/‎assets/bootstrap.min.css
+3-4
diff --git a/‎masking/index.html
+1-1 b/‎masking/index.html
+1-1
@@ -1588,7 +1588,7 @@ <h3>Removing a Known Background</h3>While removal of a simple background to a 'B
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                             <pre class="bg-light text-dark mx-4"><samp>
-  magick overlay_difference.png -channel RGBA -separate +channel \
+  magick overlay_difference.png -channel RGB -separate +channel \
           -evaluate-sequence add  -threshold 0   overlay_mask.png
 </samp></pre>
                           </td>