diff --git a/computes/templates/create_comp_block.html b/computes/templates/create_comp_block.html
index 647ed45..870825d 100644
--- a/computes/templates/create_comp_block.html
+++ b/computes/templates/create_comp_block.html
@@ -1,7 +1,7 @@
 {% load i18n %}
 {% load font_awesome %}
 {% load bootstrap4 %}
-<div class="btn-group float-right" role="group" aria-label="Add host button group">
+<div class=" btn-group btn-header float-right" role="group" aria-label="Add host button group">
     <a href="{% url 'add_tcp_host' %}" class="btn btn-success">{% trans "TCP" %}</a>
     <a href="{% url 'add_ssh_host' %}" class="btn btn-success">{% trans "SSH" %}</a>
     <a href="{% url 'add_tls_host' %}" class="btn btn-success">{% trans "TLS" %}</a>
diff --git a/conf/requirements.txt b/conf/requirements.txt
index 79f81f7..5d3fa00 100644
--- a/conf/requirements.txt
+++ b/conf/requirements.txt
@@ -1,4 +1,3 @@
-coverage==5.1
 Django==2.2.12
 django-bootstrap4
 django-fa==1.0.0
diff --git a/console/novncd b/console/novncd
index 4ed17be..d3aa445 100755
--- a/console/novncd
+++ b/console/novncd
@@ -7,7 +7,7 @@ import django
 
 DIR_PATH = os.path.dirname(os.path.abspath(__file__))
 ROOT_PATH = os.path.abspath(os.path.join(DIR_PATH, '..', ''))
-os.environ["DJANGO_SETTINGS_MODULE"] = "webvirtcloud.settings"
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'webvirtcloud.settings')
 CERT = DIR_PATH + '/cert.pem'
 
 if ROOT_PATH not in sys.path:
diff --git a/console/tunnel.py b/console/tunnel.py
index c7c19d6..539a269 100644
--- a/console/tunnel.py
+++ b/console/tunnel.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 #
 # This class provide from VirtManager project, from console.py
 # file.
diff --git a/dev/requirements.txt b/dev/requirements.txt
index 6f527ed..8cdffcc 100644
--- a/dev/requirements.txt
+++ b/dev/requirements.txt
@@ -1,4 +1,5 @@
 -r ../conf/requirements.txt
+coverage==5.1
 pycodestyle
 pyflakes==2.2.0
 pylint==2.5.2
diff --git a/secrets/views.py b/secrets/views.py
index ae5eeda..3bcc580 100644
--- a/secrets/views.py
+++ b/secrets/views.py
@@ -45,7 +45,7 @@ def secrets(request, compute_id):
             try:
                 secrt_value = conn.get_secret_value(uuid)
             except libvirtError as lib_err:
-                secret_value = None
+                secrt_value = None
             secrets_all.append({
                 'usage': secrt.usageID(),
                 'uuid': secrt.UUIDString(),