diff --git a/app/scodoc/sco_utils.py b/app/scodoc/sco_utils.py
index 7c558e3c..90cb4365 100644
--- a/app/scodoc/sco_utils.py
+++ b/app/scodoc/sco_utils.py
@@ -56,7 +56,7 @@ from pytz import timezone
 
 import flask
 from flask import g, request, Response
-from flask import flash, url_for, make_response
+from flask import flash, make_response
 from flask_json import json_response
 from werkzeug.http import HTTP_STATUS_CODES
 
diff --git a/app/templates/sidebar.j2 b/app/templates/sidebar.j2
index f3ea3a12..19e1e0ca 100755
--- a/app/templates/sidebar.j2
+++ b/app/templates/sidebar.j2
@@ -90,6 +90,9 @@
     <div class="logo-logo">
         <a href="{{ url_for( 'scodoc.about', scodoc_dept=g.scodoc_dept ) }}">
             {{ scu.icontag("scologo_img", no_size=True) | safe}}</a>
+        {% if DEBUG %}
+            <div style="color:gold; background-color:navy;">DEBUG</div>
+        {% endif %}
     </div>
 </div>
 <!-- end of sidebar -->
\ No newline at end of file
diff --git a/scodoc.py b/scodoc.py
index 8baf3cab..ebe83a93 100755
--- a/scodoc.py
+++ b/scodoc.py
@@ -58,7 +58,12 @@ cli.register(app)
 def inject_sco_utils():
     "Make Permission, sco and scu available in all Jinja templates"
     # if modified, put the same in conftest.py#27
-    return {"Permission": Permission, "scu": scu, "sco": ScoData()}
+    return {
+        "DEBUG": flask.current_app.config["DEBUG"],
+        "Permission": Permission,
+        "scu": scu,
+        "sco": ScoData(),
+    }
 
 
 @app.shell_context_processor
diff --git a/tests/conftest.py b/tests/conftest.py
index 5d7a1e8e..58ca1c11 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -29,7 +29,12 @@ def test_client():
             @apptest.context_processor
             def inject_sco_utils():
                 "Make scu available in all Jinja templates"
-                return {"Permission": Permission, "scu": scu, "sco": ScoData()}
+                return {
+                    "DEBUG": flask.current_app.config["DEBUG"],
+                    "Permission": Permission,
+                    "scu": scu,
+                    "sco": ScoData(),
+                }
 
             with apptest.test_request_context():
                 # initialize scodoc "g":