diff --git a/frappe/tests/test_naming.py b/frappe/tests/test_naming.py
index d52f48c3ec..21c24e34d0 100644
--- a/frappe/tests/test_naming.py
+++ b/frappe/tests/test_naming.py
@@ -103,7 +103,8 @@ class TestNaming(IntegrationTestCase):
 		doc.some_fieldname = description
 		doc.insert()
 
-		series = getseries("", 2)
+		series = getseries(f"TODO-{now_datetime().strftime('%m')}-{description}-", 2)
+
 		series = int(series) - 1
 
 		self.assertEqual(doc.name, f"TODO-{now_datetime().strftime('%m')}-{description}-{series:02}")
@@ -117,7 +118,7 @@ class TestNaming(IntegrationTestCase):
 			doc.field = field
 			doc.insert()
 
-			series = getseries("", 2)
+			series = getseries(f"TODO-{field}-", 2)
 			series = int(series) - 1
 
 			self.assertEqual(doc.name, f"TODO-{field}-{series:02}")
@@ -138,15 +139,13 @@ class TestNaming(IntegrationTestCase):
 		todo.description = description
 		todo.insert()
 
-		series = getseries("", 2)
-
+		week = determine_consecutive_week_number(now_datetime())
+		series = getseries(f"TODO-{week}-", 2)
 		series = str(int(series) - 1)
 
 		if len(series) < 2:
 			series = "0" + series
 
-		week = determine_consecutive_week_number(now_datetime())
-
 		self.assertEqual(todo.name, f"TODO-{week}-{series}")
 
 	def test_revert_series(self):