diff --git a/roles/ldap_server/tasks/main.yml b/roles/ldap_server/tasks/main.yml
index e3397c0d6f598be807cd95ff5e9275036b1cb4c0..4abcd1b679495e9ef59210b1da9c8392ffb54662 100644
--- a/roles/ldap_server/tasks/main.yml
+++ b/roles/ldap_server/tasks/main.yml
@@ -17,12 +17,12 @@
 - name: Install slapd
   apt:
     name: slapd
-    state: installed
+    state: present
 
 - name: Allow OpenLDAP user to traverse the directory with TLS private keys
   user:
     name: openldap
-    append: yes
+    append: true
     groups: ssl-cert
   register: openldap_in_ssl_cert
 
@@ -41,13 +41,13 @@
 - name: Install Python LDAP bindings
   apt:
     name: python-ldap
-    state: installed
+    state: present
 
 - name: Set-up LDAP server to listen on legacy SSL port
   lineinfile:
     dest: /etc/default/slapd
     state: present
-    backrefs: yes
+    backrefs: true
     regexp: '^SLAPD_SERVICES=.*'
     line: 'SLAPD_SERVICES="ldap:/// ldaps:/// ldapi:///"'
   notify:
@@ -240,13 +240,13 @@
     owner: root
     group: root
     mode: 0400
-  changed_when: False
+  changed_when: false
 
 - name: Test if LDAP admin password needs to be changed
   command: "ldapwhoami -H ldapi:/// -D 'cn=admin,{{ ldap_server_int_basedn }}' -x -y /root/.ldap_admin_password"
   register: ldap_admin_password_check
   changed_when: ldap_admin_password_check.rc != 0
-  failed_when: False
+  failed_when: false
 
 - name: Update LDAP admin password
   command: "ldappasswd -Y EXTERNAL -H ldapi:/// 'cn=admin,{{ ldap_server_int_basedn }}' -T /root/.ldap_admin_password"
@@ -256,7 +256,7 @@
   file:
     path: "/root/.ldap_admin_password"
     state: absent
-  changed_when: False
+  changed_when: false
 
 - name: Enable backup
   include: backup.yml