diff --git a/deploy/lib/deploy-log.sh b/deploy/lib/deploy-log.sh
index 325d06e..4802072 100644
--- a/deploy/lib/deploy-log.sh
+++ b/deploy/lib/deploy-log.sh
@@ -11,26 +11,19 @@ deploy_script_tee_log_if_requested() {
 	if [[ -z "$log_to_dir" ]]; then
 		return 0
 	fi
+	local _lecoffre_deploy_log_fn="${project_root}/deploy/scripts_v2/_lib/deploy-log-filename.sh"
+	if [[ ! -f "$_lecoffre_deploy_log_fn" ]]; then
+		echo "[deploy-log] missing shared helper (expected LeCoffre repo layout): ${_lecoffre_deploy_log_fn}" >&2
+		return 1
+	fi
+	# shellcheck source=/dev/null
+	source "$_lecoffre_deploy_log_fn"
 	mkdir -p "${project_root}/${log_to_dir}"
-	local site_slug="${SITE_CODE:-${LECOFFRE_SITE_CODE:-${DEPLOY_SITE_CODE:-}}}"
-	if [[ "$site_slug" == "notary" ]]; then
-		site_slug="lecoffreio"
-	fi
-	local ts
-	ts="$(date +%Y%m%d_%H%M%S)"
 	local log_file
-	if [[ -n "$deploy_env" ]]; then
-		if [[ -n "$site_slug" ]]; then
-			log_file="${project_root}/${log_to_dir}/deploy_${deploy_env}_${site_slug}_kogus_${ts}.log"
-		else
-			log_file="${project_root}/${log_to_dir}/deploy_${deploy_env}_${ts}.log"
-		fi
-	else
-		log_file="${project_root}/${log_to_dir}/deploy_${ts}.log"
-	fi
+	log_file="$(lecoffre_deploy_log_file_path_for_tee "$project_root" "$log_to_dir" "${deploy_env:-}")"
 	{
 		printf '%s\n' "=== LeCoffre deploy log ==="
-		printf '%s\n' "environment=${deploy_env:-<unset>} site=${site_slug:-<unset>} started_at=${DEPLOY_STARTED_AT:-} project_root=${project_root}"
+		lecoffre_deploy_log_tee_header_metadata_line "$project_root" "${deploy_env:-}"
 	} >"$log_file"
 	_IA_DEV_DEPLOY_LOG="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
 	if [[ -f "${_IA_DEV_DEPLOY_LOG}/lib/smart_ide_logs.sh" ]]; then