diff --git a/backups.yml b/backups.yml
old mode 100644
new mode 100755
index a926719..60200b9
--- a/backups.yml
+++ b/backups.yml
@@ -1,3 +1,4 @@
+#!/usr/bin/env ansible-playbook
 ---
 - hosts: perceval.adm.auro.re
   vars:
diff --git a/bdd.yml b/bdd.yml
old mode 100644
new mode 100755
diff --git a/deploy_postfix_non_mailhost.yml b/deploy_postfix_non_mailhost.yml
old mode 100644
new mode 100755
index e335928..741d653
--- a/deploy_postfix_non_mailhost.yml
+++ b/deploy_postfix_non_mailhost.yml
@@ -1,3 +1,4 @@
+#!/usr/bin/env ansible-playbook
 ---
 # Deploy a correclty configured postfix on non mailhost servers
 - hosts: all,!unifi