diff --git a/scripts/upgrade b/scripts/upgrade
index 2386a0a..559facb 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -141,7 +141,7 @@ then
 
 	ynh_replace_string --match_string="__TIMEZONE__" --replace_string="$(cat /etc/timezone)" --target_file="$bk_conf"
 
-	password_hash=$(ynh_app_setting_get $app password_hash)
+	password_hash=$(ynh_app_setting_get --app=$app --key=password_hash)
 	# If the password_hash is not in the app's config, recreate it from the password.
 	if [ -z "$password_hash" ]; then
 		password=$(ynh_app_setting_get --app=$app --key=password)
@@ -163,10 +163,11 @@ then
 	ynh_replace_string --match_string="__PATH__" --replace_string="$path_url" --target_file="$bk_conf"
 	ynh_replace_string --match_string="__DBNAME__" --replace_string="$db_name" --target_file="$bk_conf"
 	ynh_replace_string --match_string="__DBUSER__" --replace_string="$db_name" --target_file="$bk_conf"
-	db_pwd=$(ynh_app_setting_get $app mysqlpwd)
+	db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
 	ynh_replace_string --match_string="__DBPASS__" --replace_string="$db_pwd" --target_file="$bk_conf"
 
-	deskey=$(ynh_app_setting_get $app deskey)
+
+	deskey=$(ynh_app_setting_get --app=$app --key=encrypt_key)
 	ynh_replace_string --match_string="__DESKEY__" --replace_string="$deskey" --target_file="$bk_conf"
 
 	# Store the config file checksum into the app settings