diff --git a/data/hooks/backup/05-system_ldap b/data/hooks/backup/05-system_ldap
index 65c52fc79..9ef09b114 100644
--- a/data/hooks/backup/05-system_ldap
+++ b/data/hooks/backup/05-system_ldap
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/ldap"
 mkdir -p $backup_dir
 
diff --git a/data/hooks/backup/08-system_ssh b/data/hooks/backup/08-system_ssh
index 617eee0f2..e5f2570ea 100644
--- a/data/hooks/backup/08-system_ssh
+++ b/data/hooks/backup/08-system_ssh
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/ssh"
 mkdir -p $backup_dir
 
diff --git a/data/hooks/backup/11-system_mysql b/data/hooks/backup/11-system_mysql
index e5ff07c52..984d52a61 100644
--- a/data/hooks/backup/11-system_mysql
+++ b/data/hooks/backup/11-system_mysql
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/mysql"
 mkdir -p $backup_dir
 
diff --git a/data/hooks/backup/14-system_ssowat b/data/hooks/backup/14-system_ssowat
index f4ec8c428..fbb78f196 100644
--- a/data/hooks/backup/14-system_ssowat
+++ b/data/hooks/backup/14-system_ssowat
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/ssowat"
 mkdir -p $backup_dir
 
diff --git a/data/hooks/backup/17-system_home b/data/hooks/backup/17-system_home
index 13414a755..b73b2dff3 100644
--- a/data/hooks/backup/17-system_home
+++ b/data/hooks/backup/17-system_home
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/home"
 mkdir -p $backup_dir
 
diff --git a/data/hooks/backup/20-system_yunohost b/data/hooks/backup/20-system_yunohost
index 22d556c61..e49b52899 100644
--- a/data/hooks/backup/20-system_yunohost
+++ b/data/hooks/backup/20-system_yunohost
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/yunohost"
 mkdir -p $backup_dir
 
diff --git a/data/hooks/backup/23-system_mail b/data/hooks/backup/23-system_mail
index 2145c0bc4..7fe210ce2 100644
--- a/data/hooks/backup/23-system_mail
+++ b/data/hooks/backup/23-system_mail
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/mail"
 
 sudo cp -a /var/mail/. $backup_dir
diff --git a/data/hooks/backup/26-system_xmpp b/data/hooks/backup/26-system_xmpp
index 836c73078..2b87644d2 100644
--- a/data/hooks/backup/26-system_xmpp
+++ b/data/hooks/backup/26-system_xmpp
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/xmpp"
 mkdir -p $backup_dir/{etc,var}
 
diff --git a/data/hooks/backup/29-system_nginx b/data/hooks/backup/29-system_nginx
index 6bbcae2c1..976809122 100644
--- a/data/hooks/backup/29-system_nginx
+++ b/data/hooks/backup/29-system_nginx
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/nginx"
 mkdir -p $backup_dir
 
diff --git a/data/hooks/backup/32-system_cron b/data/hooks/backup/32-system_cron
index b529b0216..87a2a4f2e 100644
--- a/data/hooks/backup/32-system_cron
+++ b/data/hooks/backup/32-system_cron
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/cron"
 mkdir -p $backup_dir
 
diff --git a/data/hooks/restore/05-system_ldap b/data/hooks/restore/05-system_ldap
index 58ca04ea9..f16225c3e 100644
--- a/data/hooks/restore/05-system_ldap
+++ b/data/hooks/restore/05-system_ldap
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/ldap"
 
 if [ -z "$2" ]; then
diff --git a/data/hooks/restore/08-system_ssh b/data/hooks/restore/08-system_ssh
index 09aaf9c9a..bfe729f3f 100644
--- a/data/hooks/restore/08-system_ssh
+++ b/data/hooks/restore/08-system_ssh
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/ssh"
 
 sudo cp -a $backup_dir/. /etc/ssh
diff --git a/data/hooks/restore/11-system_mysql b/data/hooks/restore/11-system_mysql
index 28db51483..23293b153 100644
--- a/data/hooks/restore/11-system_mysql
+++ b/data/hooks/restore/11-system_mysql
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/mysql"
 
 mysqlpwd=$(sudo cat /etc/yunohost/mysql)
diff --git a/data/hooks/restore/14-system_ssowat b/data/hooks/restore/14-system_ssowat
index df92fe10e..15bae3c77 100644
--- a/data/hooks/restore/14-system_ssowat
+++ b/data/hooks/restore/14-system_ssowat
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/ssowat"
 
 sudo cp -a $backup_dir/. /etc/ssowat
diff --git a/data/hooks/restore/17-system_home b/data/hooks/restore/17-system_home
index a90794ad6..d005bed07 100644
--- a/data/hooks/restore/17-system_home
+++ b/data/hooks/restore/17-system_home
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/home"
 
 sudo cp -a $backup_dir/. /home
diff --git a/data/hooks/restore/20-system_yunohost b/data/hooks/restore/20-system_yunohost
index 1bd332763..2ceb2ada6 100644
--- a/data/hooks/restore/20-system_yunohost
+++ b/data/hooks/restore/20-system_yunohost
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/yunohost"
 
 sudo cp -a $backup_dir/. /etc/yunohost
diff --git a/data/hooks/restore/23-system_mail b/data/hooks/restore/23-system_mail
index 39f6f933f..ecef0ec15 100644
--- a/data/hooks/restore/23-system_mail
+++ b/data/hooks/restore/23-system_mail
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/mail"
 
 sudo cp -a $backup_dir/. /var/mail
diff --git a/data/hooks/restore/26-system_xmpp b/data/hooks/restore/26-system_xmpp
index c1b4e360e..70dc7e1c4 100644
--- a/data/hooks/restore/26-system_xmpp
+++ b/data/hooks/restore/26-system_xmpp
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/xmpp"
 
 sudo cp -a $backup_dir/etc/. /etc/metronome
diff --git a/data/hooks/restore/29-system_nginx b/data/hooks/restore/29-system_nginx
index 62810985b..5ffaf5c14 100644
--- a/data/hooks/restore/29-system_nginx
+++ b/data/hooks/restore/29-system_nginx
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/nginx"
 
 sudo cp -a $backup_dir/. /etc/nginx/conf.d
diff --git a/data/hooks/restore/32-system_cron b/data/hooks/restore/32-system_cron
index b1a53c3d0..1e12d23b7 100644
--- a/data/hooks/restore/32-system_cron
+++ b/data/hooks/restore/32-system_cron
@@ -1,5 +1,3 @@
-#!/bin/bash
-
 backup_dir="$1/cron"
 
 sudo cp -a $backup_dir/. /etc/cron.d