diff --git a/contrib/templates/placebo/thread.mustache b/contrib/templates/placebo/thread.mustache
index c9b401a..db02a6f 100644
--- a/contrib/templates/placebo/thread.mustache
+++ b/contrib/templates/placebo/thread.mustache
@@ -23,9 +23,9 @@
         <meta property="og:type" content="website"/>
         <meta property="og:title" content="{{board.Board}}"/>
         <meta property="og:description" content="thread no. {{thread.OP.PostHash}} on changolia"/>
-        <meta property="og:url" content="{{thread.Prefix}}t/{{thread.OP.PostHash}}/"/>
+        <meta property="og:url" content="{{board.Prefix}}t/{{thread.OP.PostHash}}/"/>
         <meta property="og:image"
-              content="{{thread.Prefix}}static/changolia-logo.png"/>
+              content="{{board.Prefix}}static/changolia-logo.png"/>
     </head>
     <body class="threadpage">
         {{{thread.Navbar}}}
