diff --git a/defaults/main.yml b/defaults/main.yml
index d660bff..5bb4248 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,13 +1,13 @@
 ---
-orientdb_install: False
-orientdb_enabled: True
+orientdb_install: false
+orientdb_enabled: true
 orientdb_version: 3.2.5
 orientdb_archive_commpression: tar.gz
 orientdb_dir: 'orientdb-community'
 orientdb_tar_filename: '{{ orientdb_dir }}-{{ orientdb_version }}'
 orientdb_tar_file: '{{ orientdb_tar_filename }}.{{ orientdb_archive_commpression }}'
 # Pre 3.2.5
-#orientdb_binary_distribution_url: 'https://s3.us-east-2.amazonaws.com/orientdb3/releases/{{ orientdb_version }}/{{ orientdb_tar_file }}' 
+# orientdb_binary_distribution_url: 'https://s3.us-east-2.amazonaws.com/orientdb3/releases/{{ orientdb_version }}/{{ orientdb_tar_file }}'
 orientdb_binary_distribution_url: 'https://repo1.maven.org/maven2/com/orientechnologies/{{ orientdb_dir }}/{{ orientdb_version }}/{{ orientdb_tar_file }}'
 orientdb_user: orientdb
 orientdb_log_dir: /var/log/orientdb
@@ -24,19 +24,19 @@ orientdb_configuration_files:
   - hazelcast.xml
   - automatic-backup.json
 
-orientdb_ssl_enabled: False
-orientdb_letsencrypt_ssl_enabled: False
-orientdb_ssl_client_auth_enabled: False
+orientdb_ssl_enabled: false
+orientdb_letsencrypt_ssl_enabled: false
+orientdb_ssl_client_auth_enabled: false
 
-orientdb_hooks_enabled: False
+orientdb_hooks_enabled: false
 orientdb_hooks_classes:
-  - { name: 'org.gcube.informationsystem.orientdb.hooks.HeaderHook', position: 'REGULAR' }
-  - { name: 'org.gcube.informationsystem.orientdb.hooks.ConsistsOfHook', position: 'REGULAR' }
-  - { name: 'org.gcube.informationsystem.orientdb.hooks.IsRelatedToHook', position: 'REGULAR' }
+  - {name: 'org.gcube.informationsystem.orientdb.hooks.HeaderHook', position: 'REGULAR'}
+  - {name: 'org.gcube.informationsystem.orientdb.hooks.ConsistsOfHook', position: 'REGULAR'}
+  - {name: 'org.gcube.informationsystem.orientdb.hooks.IsRelatedToHook', position: 'REGULAR'}
 
-#orientdb_hooks_jars:
+# orientdb_hooks_jars:
 #  - 'https://nexus.d4science.org/nexus/service/local/artifact/maven/redirect?r=gcube-snapshots&g=org.gcube.information-system&a=resource-registry-orientdb-hooks&v=1.3.0-SNAPSHOT&e=jar&c=jar-with-dependencies'
-#orientdb_hooks_to_be_removed:
+# orientdb_hooks_to_be_removed:
 # - hook*.jar
 
 orientdb_binary_protocol_lower_port: 2424
@@ -49,31 +49,31 @@ orientdb_http_protocol_higher_port: 2490
 orientdb_java_heap: '-Xms1024m -Xmx2048m'
 orientdb_default_settings: ''
 
-orientdb_distributed: False
+orientdb_distributed: false
 orientdb_distributed_autodeploy: 'true'
 orientdb_distributed_writequorum: 'majority'
-#orientdb_distributed_writequorum: 'all'
+# orientdb_distributed_writequorum: 'all'
 orientdb_distributed_readquorum: 1
 orientdb_distributed_readyourwrites: 'true'
 orientdb_distributed_executionmode: 'undefined'
 orientdb_new_node_strategy: 'dynamic'
 
-orientdb_graph_server_enabled: False
+orientdb_graph_server_enabled: false
 
 orientdb_hazelcast_group_name: orientdb
 orientdb_hazelcast_group_password: orientdb
 # This works on the enterprise version only.
-orientdb_hazelcast_encryption: False
+orientdb_hazelcast_encryption: false
 orientdb_hazelcast_port_min: 2434
 orientdb_hazelcast_port_max: 2454
-orientdb_hazelcast_multicast_enabled: False
+orientdb_hazelcast_multicast_enabled: false
 orientdb_hazelcast_multicast_group: 235.1.1.1
 orientdb_hazelcast_unicast_members:
-  - { member: 'localhost', port: '{{ orientdb_hazelcast_port_min }}' }
+  - {member: 'localhost', port: '{{ orientdb_hazelcast_port_min }}'}
 
 
 # For Reference see http://orientdb.com/docs/3.0.x/plugins/Automatic-Backup.html
-orientdb_automatic_backup: True
+orientdb_automatic_backup: true
 orientdb_automatic_backup_mode: 'EXPORT'
 orientdb_automatic_backup_export_options: ''
 orientdb_automatic_backup_delay: 24h