diff --git a/README.md b/README.md
index 0d649e8b3..c4bec76bb 100644
--- a/README.md
+++ b/README.md
@@ -54,11 +54,6 @@ transport  = smart
 host_key_checking = False
 nocolor = 1
 
-# For old versions 1.X
-sudo_user = root
-sudo_exe = sudo
-
-# For new versions 2.X
 become_user      = root
 become_method    = sudo
 
@@ -69,9 +64,9 @@ record_host_keys=False
 [ssh_connection]
 
 # Only in systems with OpenSSH support to ControlPersist
-ssh_args = -o ControlMaster=auto -o ControlPersist=900s
+ssh_args = -o ControlMaster=auto -o ControlPersist=900s -o StrictHostKeyChecking=no
 # In systems with older versions of OpenSSH (RHEL 6, CentOS 6, SLES 10 or SLES 11) 
-#ssh_args =
+#ssh_args = -o StrictHostKeyChecking=no
 pipelining = True
 ```
 
diff --git a/contextualization/conf-ansible.yml b/contextualization/conf-ansible.yml
index 21d65f0c4..ab029b5f2 100644
--- a/contextualization/conf-ansible.yml
+++ b/contextualization/conf-ansible.yml
@@ -157,11 +157,11 @@
       when: (ansible_os_family == "RedHat" and ansible_distribution_major_version|int < 6) or (ansible_os_family == "Suse" and ansible_distribution_major_version|int < 10)
   
     - name: Change ssh_args to set ControlPersist to 15 min in ansible.cfg
-      ini_file: dest=/etc/ansible/ansible.cfg section=ssh_connection option=ssh_args value="-o ControlMaster=auto -o ControlPersist=900s"
+      ini_file: dest=/etc/ansible/ansible.cfg section=ssh_connection option=ssh_args value="-o ControlMaster=auto -o ControlPersist=900s -o StrictHostKeyChecking=no"
       when: ansible_os_family == "Debian" or (ansible_os_family == "RedHat" and ansible_distribution_major_version|int >= 7) or (ansible_os_family == "Suse" and ansible_distribution_major_version|int >= 12)
         
     - name: Change ssh_args to remove ControlPersist in REL 6 and older in ansible.cfg
-      ini_file: dest=/etc/ansible/ansible.cfg section=ssh_connection option=ssh_args value=""
+      ini_file: dest=/etc/ansible/ansible.cfg section=ssh_connection option=ssh_args value="-o StrictHostKeyChecking=no"
       when: (ansible_os_family == "RedHat" and ansible_distribution_major_version|int < 7) or (ansible_os_family == "Suse" and ansible_distribution_major_version|int < 12)
         
     - name: Activate SSH pipelining in ansible.cfg