diff --git a/efelg/views.py b/efelg/views.py
index c63712e5..d7b608a9 100755
--- a/efelg/views.py
+++ b/efelg/views.py
@@ -609,7 +609,7 @@ def index_docs(request):
     """
     Render Guidebook main page
     """
-    logger.info(LOG_ACTION.format(request.session['username'], 'access INDEX_DOCS page'))
+    logger.info(LOG_ACTION.format(request.session.get('username', 'anonymous'), 'access INDEX_DOCS page'))
 
     return render(request, 'efelg/docs/index.html')
 
diff --git a/templates/efelg/overview.html b/templates/efelg/overview.html
index 707fbf6e..3fbfb18a 100755
--- a/templates/efelg/overview.html
+++ b/templates/efelg/overview.html
@@ -59,7 +59,7 @@ <h4>
                 <p>
                     Please find below a short tutorial on how to use the application, or refer to the complete guide at
                     this
-                    <a class="link-secondary" href="https://collab.humanbrainproject.eu/#/collab/1655/nav/18580"
+                    <a class="link-secondary" href="https://hbp-bsp-hhnb.cineca.it/efelg/docs/"
                         target=_blank>link</a>.
                 </p>
             </h4>