diff --git a/scripts/jobs-worker.ts b/scripts/jobs-worker.ts
index dc7c57a025..b0e996afe6 100644
--- a/scripts/jobs-worker.ts
+++ b/scripts/jobs-worker.ts
@@ -140,7 +140,8 @@ async function backupEmulatorJar(): Promise<void> {
 
 /** Optional mysqldump when DB_BACKUP_DIR is set (host must have mysqldump on PATH). */
 async function backupDatabase(): Promise<void> {
-	if (!env.DB_BACKUP_DIR || !env.DATABASE_URL) return;
+	const backupDir = env.DB_BACKUP_DIR;
+	if (!backupDir || !env.DATABASE_URL) return;
 
 	const { mkdirSync, readdirSync, unlinkSync, existsSync, createWriteStream } =
 		await import("node:fs");
@@ -155,14 +156,14 @@ async function backupDatabase(): Promise<void> {
 		return;
 	}
 
-	if (!existsSync(env.DB_BACKUP_DIR)) {
-		mkdirSync(env.DB_BACKUP_DIR, { recursive: true });
+	if (!existsSync(backupDir)) {
+		mkdirSync(backupDir, { recursive: true });
 	}
 
 	const timestamp = new Date().toISOString().slice(0, 19).replace(/[T:]/g, "-");
 	const dbName =
 		decodeURIComponent(parsed.pathname.replace(/^\//, "")) || "cms";
-	const outFile = resolve(env.DB_BACKUP_DIR, `db-${dbName}-${timestamp}.sql`);
+	const outFile = resolve(backupDir, `db-${dbName}-${timestamp}.sql`);
 
 	const args = [
 		`-h${parsed.hostname}`,
@@ -201,12 +202,13 @@ async function backupDatabase(): Promise<void> {
 			} else {
 				logger.info("Backed up database", { module: "jobs", outFile });
 				const keep = env.DB_BACKUP_KEEP ?? 7;
-				const files = readdirSync(env.DB_BACKUP_DIR)
+				const files = readdirSync(backupDir)
 					.filter((f) => f.startsWith("db-") && f.endsWith(".sql"))
 					.sort()
 					.reverse();
 				for (let i = keep; i < files.length; i++) {
-					unlinkSync(resolve(env.DB_BACKUP_DIR, files[i]));
+					const file = files[i];
+					if (file) unlinkSync(resolve(backupDir, file));
 				}
 			}
 			resolvePromise();