diff --git a/config_panel.toml b/config_panel.toml
index 95b839f..4c06926 100644
--- a/config_panel.toml
+++ b/config_panel.toml
@@ -22,7 +22,9 @@ name.fr = "Configuration SMTP"
 
     [main.smtp.disable_email]
         ask.fr = "Désactiver l'envoi des mails (non par défaut)"
-        type = "boolean"
+        type = "string"
+        choices.false = "faux par défaut"
+        choices.true = "vrai, désactive l'envoi des mails"
         bind = "DISABLE_EMAIL:__INSTALL_DIR__/config.local.php"
 
     [main.smtp.smtp_host]
diff --git a/scripts/install b/scripts/install
index 7ff9024..d440571 100644
--- a/scripts/install
+++ b/scripts/install
@@ -12,7 +12,7 @@ source /usr/share/yunohost/helpers
 secret_key=$(ynh_string_random --length=50)
 ynh_app_setting_set --app=$app --key=secret_key --value=$secret_key
 
-ynh_app_setting_set --app=$app --key=smtp_disable_email --value=0
+ynh_app_setting_set --app=$app --key=smtp_disable_email --value=false
 ynh_app_setting_set --app=$app --key=smtp_host --value=$domain
 ynh_app_setting_set --app=$app --key=smtp_port --value=25
 ynh_app_setting_set --app=$app --key=smtp_user --value=$app
diff --git a/scripts/upgrade b/scripts/upgrade
index 54c25ce..48e8809 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -43,7 +43,7 @@ if [ -z "${smtp_host:-}" ]; then
 		ynh_replace_string --match_string="const SMTP_" --replace_string="//const SMTP_" --target_file=$user_conf
 		ynh_replace_string --match_string="const MAIL_" --replace_string="//const MAIL_" --target_file=$user_conf
 	else
-		disable_email=0
+		disable_email=false
 		smtp_host=$domain
 		smtp_port=25
 		smtp_user=$app