diff --git a/main/session/about.php b/main/session/about.php
index b4592fecbc..8ef90112e5 100644
--- a/main/session/about.php
+++ b/main/session/about.php
@@ -32,6 +32,9 @@ $entityManager = Database::getManager();
 $fieldsRepo = $entityManager->getRepository('ChamiloCoreBundle:ExtraField');
 $fieldTagsRepo = $entityManager->getRepository('ChamiloCoreBundle:ExtraFieldRelTag');
 $userRepo = $entityManager->getRepository('ChamiloUserBundle:User');
+$sequenceResourceRepo = $entityManager->getRepository(
+    'ChamiloCoreBundle:SequenceResource'
+);
 
 $tagField = $fieldsRepo->findOneBy([
     'extraFieldType' => ExtraField::COURSE_FIELD_TYPE,
@@ -110,6 +113,13 @@ $sessionDates = SessionManager::parseSessionDates([
     'coach_access_end_date' => $session->getCoachAccessEndDate()
 ]);
 
+$sessionRequirements = $sequenceResourceRepo->getRequirements(
+    $session->getId(),
+    \Chamilo\CoreBundle\Entity\SequenceResource::SESSION_TYPE
+);
+
+$courseController = new CoursesController();
+
 /* View */
 $template = new Template($session->getName(), true, true, false, true, false);
 $template->assign('show_tutor', (api_get_setting('show_session_coach')==='true' ? true : false));
@@ -123,6 +133,14 @@ $template->assign(
         api_get_user_id()
     )
 );
+$template->assign(
+    'subscribe_button',
+    $courseController->getRegisteredInSessionButton(
+        $session->getId(),
+        $session->getName(),
+        !empty($sessionRequirements)
+    )
+);
 
 $template->assign('courses', $courses);
 $template->assign('essence', \Essence\Essence::instance());
diff --git a/main/template/default/session/about.tpl b/main/template/default/session/about.tpl
index ad8efa777e..3f474c8934 100644
--- a/main/template/default/session/about.tpl
+++ b/main/template/default/session/about.tpl
@@ -58,7 +58,7 @@
 
                 {% if courses|length == 1 and not is_subscribed %}
                     <div class="subscribe">
-                        <a href="#" class="btn btn-success btn-lg btn-block"><i class="fa fa-book"></i> {{ "Subscribe"|get_lang }}</a>
+                        {{ subscribe_button }}
                     </div>
                 {% endif %}
             </div>
@@ -147,7 +147,7 @@
             <div class="row">
                 <div class="col-md-4 col-md-offset-4">
                     <div class="text-center">
-                        <a href="#" class="btn btn-success btn-lg btn-block"><i class="fa fa-book"></i> {{ "Subscribe"|get_lang }}</a>
+                        {{ subscribe_button }}
                     </div>
                 </div>
             </div>
@@ -158,7 +158,7 @@
         <div class="row">
             <div class="col-md-4 col-md-offset-4">
                 <div class="text-center">
-                    <a href="#" class="btn btn-success btn-lg btn-block"><i class="fa fa-book"></i> {{ "Subscribe"|get_lang }}</a>
+                    {{ subscribe_button }}
                 </div>
             </div>
         </div>