diff --git a/backend/src/mailer/sendEMail.test.ts b/backend/src/mailer/sendEMail.test.ts
index e062b71d8..8fa8b0d7b 100644
--- a/backend/src/mailer/sendEMail.test.ts
+++ b/backend/src/mailer/sendEMail.test.ts
@@ -9,6 +9,7 @@ CONFIG.EMAIL_SMTP_URL = 'EMAIL_SMTP_URL'
 CONFIG.EMAIL_SMTP_PORT = '1234'
 CONFIG.EMAIL_USERNAME = 'user'
 CONFIG.EMAIL_PASSWORD = 'pwd'
+CONFIG.EMAIL_TLS = true
 
 jest.mock('nodemailer', () => {
   return {