diff --git a/phpBB/styles/prosilver/template/overall_header.html b/phpBB/styles/prosilver/template/overall_header.html
index 79a8b07971..3e00827235 100644
--- a/phpBB/styles/prosilver/template/overall_header.html
+++ b/phpBB/styles/prosilver/template/overall_header.html
@@ -120,7 +120,8 @@
 			<div class="inner">
 
 			<ul class="linklist navlinks">
-				<li class="icon-home"><!-- IF U_SITE_HOME --><a href="{U_SITE_HOME}">{L_SITE_HOME}</a> <strong>&#8249;</strong> <!-- ENDIF --><a href="{U_INDEX}" accesskey="h">{L_INDEX}</a> <!-- BEGIN navlinks --> <strong>&#8249;</strong> <a href="{navlinks.U_VIEW_FORUM}">{navlinks.FORUM_NAME}</a><!-- END navlinks --></li>
+				<!-- DEFINE $MICRODATA = ' itemtype="http://data-vocabulary.org/Breadcrumb" itemscope=""' -->
+				<li class="icon-home"><!-- IF U_SITE_HOME --><a href="{U_SITE_HOME}"{$MICRODATA}>{L_SITE_HOME}</a> <strong>&#8249;</strong> <!-- ENDIF --><a href="{U_INDEX}" accesskey="h"{$MICRODATA}>{L_INDEX}</a> <!-- BEGIN navlinks --> <strong>&#8249;</strong> <a href="{navlinks.U_VIEW_FORUM}"{$MICRODATA}>{navlinks.FORUM_NAME}</a><!-- END navlinks --></li>
 
 				<!-- IF U_EMAIL_TOPIC --><li class="rightside"><a href="{U_EMAIL_TOPIC}" title="{L_EMAIL_TOPIC}" class="sendemail">{L_EMAIL_TOPIC}</a></li><!-- ENDIF -->
 				<!-- IF U_EMAIL_PM --><li class="rightside"><a href="{U_EMAIL_PM}" title="{L_EMAIL_PM}" class="sendemail">{L_EMAIL_PM}</a></li><!-- ENDIF -->
diff --git a/phpBB/styles/subsilver2/template/breadcrumbs.html b/phpBB/styles/subsilver2/template/breadcrumbs.html
index 73386ed851..49e31c0749 100644
--- a/phpBB/styles/subsilver2/template/breadcrumbs.html
+++ b/phpBB/styles/subsilver2/template/breadcrumbs.html
@@ -1,7 +1,8 @@
+	<!-- IF $S_MICRODATA --><!-- DEFINE $MICRODATA = ' itemtype="http://data-vocabulary.org/Breadcrumb" itemscope=""' --><!-- ELSE --><!-- DEFINE $MICRODATA = '' --><!-- ENDIF -->
 	<table class="tablebg" width="100%" cellspacing="1" cellpadding="0" style="margin-top: 5px;">
 	<tr>
 		<td class="row1">
-			<p class="breadcrumbs"><!-- IF U_SITE_HOME --><a href="{U_SITE_HOME}">{L_SITE_HOME}</a> <strong>&#187;</strong> <!-- ENDIF --><a href="{U_INDEX}">{L_INDEX}</a><!-- BEGIN navlinks --> &#187; <a href="{navlinks.U_VIEW_FORUM}">{navlinks.FORUM_NAME}</a><!-- END navlinks --></p>
+			<p class="breadcrumbs"><!-- IF U_SITE_HOME --><a href="{U_SITE_HOME}"{$MICRODATA}>{L_SITE_HOME}</a> <strong>&#187;</strong> <!-- ENDIF --><a href="{U_INDEX}"{$MICRODATA}>{L_INDEX}</a><!-- BEGIN navlinks --> &#187; <a href="{navlinks.U_VIEW_FORUM}"{$MICRODATA}>{navlinks.FORUM_NAME}</a><!-- END navlinks --></p>
 			<p class="datetime">{S_TIMEZONE}</p>
 		</td>
 	</tr>
diff --git a/phpBB/styles/subsilver2/template/overall_header.html b/phpBB/styles/subsilver2/template/overall_header.html
index e93dd056bf..4ed69c56aa 100644
--- a/phpBB/styles/subsilver2/template/overall_header.html
+++ b/phpBB/styles/subsilver2/template/overall_header.html
@@ -195,6 +195,8 @@ function marklist(id, name, state)
 
 	<br style="clear: both;" />
 
+	<!-- DEFINE $S_MICRODATA = 1 -->
 	<!-- INCLUDE breadcrumbs.html -->
+	<!-- DEFINE $S_MICRODATA = 0 -->
 
 	<br />