diff --git a/src/CourseBundle/EventListener/CourseListener.php b/src/CourseBundle/EventListener/CourseListener.php
index 1cb9536079..d22afb98bc 100644
--- a/src/CourseBundle/EventListener/CourseListener.php
+++ b/src/CourseBundle/EventListener/CourseListener.php
@@ -102,7 +102,7 @@ class CourseListener
             if (empty($sessionId)) {
                 $sessionHandler->remove('session_name');
                 $sessionHandler->remove('sid');
-                $sessionHandler->remove('sessionObj');
+                $sessionHandler->remove('session');
                 // Check if user is allowed to this course
                 // See CourseVoter.php
                 if (false === $checker->isGranted(CourseVoter::VIEW, $course)) {
@@ -293,8 +293,8 @@ class CourseListener
         $sessionHandler->remove('_real_cid');
         $sessionHandler->remove('_course');
         $sessionHandler->remove('_locale_course');
-        $sessionHandler->remove('courseObj');
-        $sessionHandler->remove('sessionObj');
+        $sessionHandler->remove('course');
+        $sessionHandler->remove('session');
         $sessionHandler->remove('course_url_params');
         $sessionHandler->remove('origin');
 
diff --git a/src/ThemeBundle/Resources/views/Resource/index.html.twig b/src/ThemeBundle/Resources/views/Resource/index.html.twig
index 17511c3773..500fe05876 100644
--- a/src/ThemeBundle/Resources/views/Resource/index.html.twig
+++ b/src/ThemeBundle/Resources/views/Resource/index.html.twig
@@ -4,15 +4,15 @@
   {% if is_granted('EDIT', course) %}
     <div class="actions">
       <a class="btn btn-secondary"
-         href="{{ url('chamilo_core_resource_new_folder', {'tool': tool, 'type': type, 'cid': course.id, 'sid': sessionObj.id, 'id': id }) }}">
+         href="{{ url('chamilo_core_resource_new_folder', {'tool': tool, 'type': type, 'cid': course.id, 'sid': session.id, 'id': id }) }}">
         {{ 'New folder' | trans }}
       </a>
       <a class="btn btn-secondary"
-         href="{{ url('chamilo_core_resource_new', { 'tool': tool, 'type': type, 'cid': course.id, 'sid': sessionObj.id,  'id': id }) }}">
+         href="{{ url('chamilo_core_resource_new', { 'tool': tool, 'type': type, 'cid': course.id, 'sid': session.id,  'id': id }) }}">
         {{ 'Create new document' | trans }}
       </a>
       <a class="btn btn-secondary"
-         href="{{ url('chamilo_core_resource_upload', { 'tool': tool, 'type': type, 'cid': course.id, 'sid': sessionObj.id,  'id': id }) }}">
+         href="{{ url('chamilo_core_resource_upload', { 'tool': tool, 'type': type, 'cid': course.id, 'sid': session.id,  'id': id }) }}">
         {{ 'Upload' | trans }}
       </a>
     </div>
diff --git a/src/ThemeBundle/Resources/views/Resource/preview.html.twig b/src/ThemeBundle/Resources/views/Resource/preview.html.twig
index bbe4456a83..6cec2d810f 100644
--- a/src/ThemeBundle/Resources/views/Resource/preview.html.twig
+++ b/src/ThemeBundle/Resources/views/Resource/preview.html.twig
@@ -12,7 +12,7 @@
                          'chamilo_core_resource_view', {
                              'id': resource.resourceNode.id,
                              'cid': course.id,
-                             'sid': sessionObj.id,
+                             'sid': session.id,
                              'type' : type,
                              'tool' : tool,
                              'filter' : 'resource_show_preview'
@@ -27,7 +27,7 @@
                 href="{{ url('chamilo_core_resource_view', {
                 'id': resource.resourceNode.id,
                 'cid': course.id,
-                'sid': sessionObj.id,
+                'sid': session.id,
                 'type' : type,
                 'tool' : tool,
                 'mode' : 'download'
diff --git a/src/ThemeBundle/Resources/views/Resource/show.html.twig b/src/ThemeBundle/Resources/views/Resource/show.html.twig
index 7370ac2f4a..093881d265 100644
--- a/src/ThemeBundle/Resources/views/Resource/show.html.twig
+++ b/src/ThemeBundle/Resources/views/Resource/show.html.twig
@@ -8,7 +8,7 @@
             <a href="{{ url('chamilo_core_resource_view', {
                 'id': resource.resourceNode.id,
                 'cid': course.id,
-                'sid': sessionObj.id,
+                'sid': session.id,
                 'type' : type,
                 'tool' : tool,
                 'mode' : 'download'
diff --git a/src/ThemeBundle/Resources/views/Resource/upload.html.twig b/src/ThemeBundle/Resources/views/Resource/upload.html.twig
index 4995b72e01..65f5501bed 100644
--- a/src/ThemeBundle/Resources/views/Resource/upload.html.twig
+++ b/src/ThemeBundle/Resources/views/Resource/upload.html.twig
@@ -24,7 +24,7 @@
               type: '{{ type }}',
               tool: '{{ tool }}',
               cid: '{{ course.id }}',
-              sid: '{{ sessionObj.id }}',
+              sid: '{{ session.id }}',
               id: '{{ id }}'
           },
           // dataType: 'json',