diff --git a/demo/default.htm b/demo/default.htm
index ff0302fc..3d49c422 100644
--- a/demo/default.htm
+++ b/demo/default.htm
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8"/>
   <link href="default.css" rel="stylesheet" type="text/css"/>
-  <link rel="shortcut icon" href="favicon.ico"/>
+  <link href="favicon.svg" rel="icon" type="image/svg+xml"/>
   <meta name="description" content="Demo for markdownlint, a Node.js style checker and lint tool for Markdown/CommonMark files."/>
   <title>markdownlint demo</title>
   <base target="_blank"/>
diff --git a/demo/favicon.svg b/demo/favicon.svg
new file mode 100644
index 00000000..8d3acbca
--- /dev/null
+++ b/demo/favicon.svg
@@ -0,0 +1,13 @@
+<svg viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg">
+  <style>
+    rect { stroke: black; stroke-width: 1; fill: white }
+    path { stroke: black; stroke-linecap: round; stroke-linejoin: round; fill: none }
+  </style>
+  <rect x="0.5" y="0.5" width="15" height="15" rx= "1" ry="1"/>
+  <path d="M 10.5,2.5 L 11.5,2.5 L 11.5,5.5 L 13,5.5 L 11,7.5 L 9,5.5 L 10.5,5.5 Z" style="fill:black"/>
+  <path d="M 2.5 7.5 L 2.5 3 L 4.5 5 L 6.5 3 L 6.5 7.5"/>
+  <path d="M 2.5,9.5 L 2.5,13.5 L 4,13.5"/>
+  <path d="M 5.5,10 L 5.5,10 M 5.5,11.5 L 5.5,13.5"/>
+  <path d="M 7.5,13.5 L 7.5,12 L 8 11.5 L 9 11.5 L 9.5,12 L 9.5,13.5"/>
+  <path d="M 12,13.5 L 12,10 M 11,11.5 L 13,11.5"/>
+</svg>
