diff --git a/app/views/histories/11_downing_street.html.erb b/app/views/histories/11_downing_street.html.erb
index 6b05461fe..3d6a19771 100644
--- a/app/views/histories/11_downing_street.html.erb
+++ b/app/views/histories/11_downing_street.html.erb
@@ -58,7 +58,7 @@
 
   <div class="govuk-grid-column-two-thirds">
   <%= render "govuk_publishing_components/components/govspeak", {} do %>
-    <h3 id="roots-of-the-treasury">Roots of the Treasury</h3>
+    <h2 id="roots-of-the-treasury">Roots of the Treasury</h2>
     <p>Today’s Treasury dates from around the Norman Conquest. Even before 1066, the Anglo-Saxon Treasury collected taxes (including the danegeld, first levied as a tribute to the Vikings to persuade them &ndash; sometimes unsuccessfully &ndash; to stay away) and controlled expenditure.</p>
     <p>The first &lsquo;Treasurer&rsquo; was probably &lsquo;Henry the Treasurer&rsquo;, who owned land around Winchester, the site of most royal treasure of both the Anglo-Saxons and the Normans. Henry is referred to in the Domesday Book (a systematic tax assessment of the whole country undertaken by the Treasury) and is believed to have served William the Conqueror as his Treasurer.</p>