diff --git a/frappe/tests/test_email.py b/frappe/tests/test_email.py
index 2e3932c7e3..4a2ec50c30 100644
--- a/frappe/tests/test_email.py
+++ b/frappe/tests/test_email.py
@@ -57,16 +57,20 @@ class TestEmail(IntegrationTestCase):
 	def test_send_after(self):
 		self.test_email_queue(send_after=1)
 		from frappe.email.queue import flush
+		from frappe.utils import add_to_date, now_datetime
 
-		flush()
+		with self.freeze_time(add_to_date(now_datetime(), seconds=12)):
+			flush()
 		email_queue = frappe.db.sql("""select name from `tabEmail Queue` where status='Sent'""", as_dict=1)
 		self.assertEqual(len(email_queue), 0)
 
 	def test_flush(self):
 		self.test_email_queue()
 		from frappe.email.queue import flush
+		from frappe.utils import add_to_date, now_datetime
 
-		flush()
+		with self.freeze_time(add_to_date(now_datetime(), seconds=12)):
+			flush()
 		email_queue = frappe.db.sql("""select name from `tabEmail Queue` where status='Sent'""", as_dict=1)
 		self.assertEqual(len(email_queue), 1)
 		queue_recipients = [