diff --git a/about.pl b/about.pl
index d144e371bb..339f4e2820 100755
--- a/about.pl
+++ b/about.pl
@@ -121,6 +121,19 @@ if ( C4::Context->preference( 'UseQueryParser' ) ) {
     }
 }
 
+# Test Zebra facets configuration
+if ( !defined C4::Context->config('use_zebra_facets') ) {
+    push @xml_config_warnings, { error => 'use_zebra_facets_entry_missing' };
+} else {
+    if ( C4::Context->config('use_zebra_facets') &&
+         C4::Context->config('zebra_bib_index_mode') ) {
+        # use_zebra_facets works with DOM
+        push @xml_config_warnings, {
+            error => 'use_zebra_facets_needs_dom'
+        } if C4::Context->config('zebra_bib_index_mode') ne 'dom' ;
+    }
+}
+
 $template->param(
     kohaVersion   => $kohaVersion,
     osVersion     => $osVersion,
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/about.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/about.tt
index a5ce2f8127..75a367db37 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/about.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/about.tt
@@ -155,6 +155,20 @@
                         file. <strong>[% config_entry.file %]</strong> is used as a fallback.
                     </td>
                 </tr>
+                [% ELSIF config_entry.error == 'use_zebra_facets_entry_missing' %]
+                <tr>
+                    <th scope="row"><b>Warning</b></th>
+                    <td>The &lt;use_zebra_facets&gt; entry is missing in your configuration file. Falling back
+                        to legacy facet calculation.
+                    </td>
+                </tr>
+                [% ELSIF config_entry.error == 'use_zebra_facets_needs_dom' %]
+                <tr>
+                    <th scope="row"><b>Warning</b></th>
+                    <td>You have set &lt;use_zebra_facets&gt; but the &lt;zebra_bib_index_mode&gt; is not set to <strong>dom</strong>. Falling back
+                        to legacy facet calculation.
+                    </td>
+                </tr>
                 [% END %]
             [% END %]
             </table>