diff --git a/htdocs/index.php b/htdocs/index.php
index 85625cf..ff7a483 100644
--- a/htdocs/index.php
+++ b/htdocs/index.php
@@ -10,6 +10,7 @@
         <link href='css/style.css' rel='stylesheet' type='text/css'>
         <link rel="shortcut icon" href="favicon.ico">
         <link rel="apple-touch-icon" href="img/icon_128.png" />
+        <meta property="og:image" content="/img/icon_128.png"/>
     </head>
     <body>
         <div class="char welcome">
