diff --git a/wagtail/admin/templates/wagtailadmin/pages/search_results.html b/wagtail/admin/templates/wagtailadmin/pages/search_results.html
index 6df2ff87c5..7af404ab48 100644
--- a/wagtail/admin/templates/wagtailadmin/pages/search_results.html
+++ b/wagtail/admin/templates/wagtailadmin/pages/search_results.html
@@ -12,8 +12,8 @@
         {% search_other %}
 
         {% if pages.object_list.supports_facet %}
-            <nav class="listing-filter">
-                <h3 class="filter-title">{% trans "Page types" %}</h3>
+            <nav class="listing-filter" aria-labelledby="page-types-title">
+                <h3 id="page-types-title" class="filter-title">{% trans "Page types" %}</h3>
                 <ul class="filter-options">
                     {% if not selected_content_type %}
                         <li style="background-color: #E6E6E6">All ({{ all_pages.count }})</li>
diff --git a/wagtail/admin/templates/wagtailadmin/shared/search_other.html b/wagtail/admin/templates/wagtailadmin/shared/search_other.html
index b8baca77a4..f326e6cdf3 100644
--- a/wagtail/admin/templates/wagtailadmin/shared/search_other.html
+++ b/wagtail/admin/templates/wagtailadmin/shared/search_other.html
@@ -1,6 +1,6 @@
 {% load i18n %}
-<nav class="listing-filter">
-    <h3 class="filter-title">{% trans "Other searches" %}</h3>
+<nav class="listing-filter" aria-labelledby="other-searches-title">
+    <h3 id="other-searches-title" class="filter-title">{% trans "Other searches" %}</h3>
     <ul class="filter-options">
         {{ options_html }}
     </ul>