diff --git a/core/src/main/resources/lib/form/section.jelly b/core/src/main/resources/lib/form/section.jelly
index 1d7996823398..ddf11d2ce024 100644
--- a/core/src/main/resources/lib/form/section.jelly
+++ b/core/src/main/resources/lib/form/section.jelly
@@ -36,8 +36,7 @@ THE SOFTWARE.
     </st:attribute>
   </st:documentation>
 
-<!--  Restore-->
-<!--  <st:adjunct includes="lib.form.section_" />-->
+  <st:adjunct includes="lib.form.section_" />
 
   <div class="jenkins-section">
     <j:if test="${attrs.title!=null}">
diff --git a/core/src/main/resources/lib/form/section_.js b/core/src/main/resources/lib/form/section_.js
index b6f0732dc864..a243d76a5ecd 100644
--- a/core/src/main/resources/lib/form/section_.js
+++ b/core/src/main/resources/lib/form/section_.js
@@ -52,7 +52,7 @@ var section = (function (){
 
                 for (var e=dom.firstChild; e!=null; e=e.nextSibling) {
                     if (e.nodeType==1) {
-                        if (e.className=="section-header" && isVisible(e)) {
+                        if (e.className === "jenkins-section__title" && isVisible(e)) {
                             var child = new SectionNode(e);
                             parent.children.push(child);
                             // The next line seems to be unnecessary, as there are no children inside the section header itself.