diff --git a/conf/sql/admin.sql b/conf/sql/admin.sql
index 127ed0c..991b6db 100644
--- a/conf/sql/admin.sql
+++ b/conf/sql/admin.sql
@@ -1,3 +1,3 @@
-INSERT INTO `wt_user` (`user_id`, `user_name`, `real_name`, `email`, `password`) VALUES (NULL, '__USER_NAME__', '__NAME__', '__USER_EMAIL__', '__PASSWORD__');
+INSERT INTO `wt_user` (`user_id`, `user_name`, `real_name`, `email`, `password`) VALUES (NULL, '__ADMIN__', '__ADMIN__', '__EMAIL__', '__PASSWORD__');
 INSERT INTO `wt_user_setting` (`user_id`, `setting_name`, `setting_value`) VALUES ('1', 'canadmin', '1'), ('1', 'verified', '1'), ('1', 'verified_by_admin', '1');
  
diff --git a/manifest.json b/manifest.json
index 9df9c1c..7e2fc4c 100644
--- a/manifest.json
+++ b/manifest.json
@@ -41,34 +41,7 @@
                 "example": "/webtrees",
                 "default": "/webtrees"
             },
-            {
-                "name": "username",
-                "type": "string",
-                "ask": {
-                    "en": "Choose an admin username (Not a LDAP User)",
-                    "fr": "Choisissez un nom d'utilisateur pour l'administrateur de Webtrees (ne doit pas être un utilisateur YunoHost existant)"
-                },
-                "example": "john"
-            },
-            {
-                "name": "name",
-                "type": "string",
-                "ask": {
-                    "en": "Name of the user (Not a LDAP User)",
-                    "fr": "Nom de cet utilisateur"
-                },
-                "example": "john doe"
-            },
-            {
-                "name": "email",
-                "type": "string",
-                "ask": {
-                    "en": "Admin email (All the new registration will be sent on this email)",
-                    "fr": "Adresse email de l'administrateur (Toutes les nouvelles inscriptions seront envoyées à cette adresse)"
-                },
-                "example": "admin@example.com"
-            },
-            {
+           {
                 "name": "is_public",
                 "type": "boolean",
                 "help": {
@@ -76,6 +49,14 @@
                     "fr": "Si cochée, Webtrees sera publique"
                 },
                 "default": true
+            },
+            {
+                "name": "admin",
+                "type": "user"
+            },
+            {
+                "name": "password",
+                "type": "password"
             }
         ]
     }
diff --git a/scripts/install b/scripts/install
index 16b6b62..719e171 100755
--- a/scripts/install
+++ b/scripts/install
@@ -28,11 +28,9 @@ ynh_abort_if_errors
 domain=$YNH_APP_ARG_DOMAIN
 path_url=$YNH_APP_ARG_PATH
 is_public=$YNH_APP_ARG_IS_PUBLIC
-admin_username=$YNH_APP_ARG_USERNAME
-admin_name=$YNH_APP_ARG_NAME
-admin_email=$YNH_APP_ARG_EMAIL
+admin=$YNH_APP_ARG_ADMIN
+email=$(ynh_user_get_info --username=$admin --key=mail)
 password=$(ynh_string_random 24)
-admin_password=$(openssl passwd -1 -salt xyz $password)
 
 app=$YNH_APP_INSTANCE_NAME
 
@@ -54,6 +52,7 @@ ynh_script_progression --message="Storing installation settings..."
 
 ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=path --value=$path_url
+ynh_app_setting_set --app=$app --key=admin --value=$admin
 
 #=================================================
 # INSTALL DEPENDENCIES
@@ -121,13 +120,9 @@ ynh_add_config --template="../conf/config.ini.php" --destination="$final_path/da
 # Load initial SQL into the new database
 ynh_mysql_connect_as --user="$db_user" --password="$db_pwd" --database="$db_name" < "../conf/sql/webtrees.sql"
 
-# Replace variables in sql scripts
-ynh_replace_string --match_string="__USER_NAME__"  --replace_string="$admin_username" --target_file="../conf/sql/admin.sql"
-ynh_replace_string --match_string="__NAME__"       --replace_string="$admin_name"     --target_file="../conf/sql/admin.sql"
-ynh_replace_string --match_string="__USER_EMAIL__" --replace_string="$admin_email"    --target_file="../conf/sql/admin.sql"
-ynh_replace_string --match_string="__PASSWORD__"   --replace_string="$admin_password" --target_file="../conf/sql/admin.sql"
-
-ynh_mysql_connect_as --user="$db_user" --password="$db_pwd" --database="$db_name" < "../conf/sql/admin.sql"
+ynh_add_config --template="../conf/sql/admin.sql" --destination="/var/tmp/admin.sql"
+ynh_mysql_connect_as --user="$db_user" --password="$db_pwd" --database="$db_name" < "/var/tmp/admin.sql"
+ynh_secure_remove --file="/var/tmp/admin.sql"
 
 #=================================================
 # SETUP SSOWAT
@@ -157,7 +152,7 @@ echo "Webtrees was successfully installed :)
 Please open https://$domain$path_url 
 
 Your credentials for the admin panel are:
-- admin username: $admin_username
+- admin username: $admin
 - admin password: $password
 
 If you facing an issue or want to improve Webtrees, please open a new issue in this project: https://github.com/YunoHost-Apps/webtrees_ynh" > mail_to_send