diff --git a/app/subscriptions/routes/promocodes_mub.py b/app/subscriptions/routes/promocodes_mub.py
index 4875ff3a..7e2c2781 100644
--- a/app/subscriptions/routes/promocodes_mub.py
+++ b/app/subscriptions/routes/promocodes_mub.py
@@ -23,7 +23,10 @@ async def list_promocodes(
     limit: Annotated[int, Query(ge=1, le=100)] = 100,
 ) -> Sequence[Promocode]:
     return await Promocode.find_paginated_by_kwargs(
-        offset, limit, Promocode.created_at.desc()
+        offset,
+        limit,
+        Promocode.created_at.desc(),
+        Promocode.id.desc(),
     )
 
 
diff --git a/tests/autocomplete/conftest.py b/tests/autocomplete/conftest.py
index 403307d4..7b2b22b9 100644
--- a/tests/autocomplete/conftest.py
+++ b/tests/autocomplete/conftest.py
@@ -107,12 +107,13 @@ def generate_subject_name(
     faker: Faker,
     prefix: str,
     suffix: str,
+    unique_letter: str,
 ) -> str:
     random_part: str = faker.bothify(
         "?" * faker.random_int(min=0, max=90),
         letters=quarter_of_ascii_letters_any_case(3),
     )
-    return prefix + random_part + suffix
+    return prefix + random_part + unique_letter + suffix
 
 
 @pytest.fixture()
@@ -125,6 +126,7 @@ async def subjects(
     odd_subject_name_suffix: str,
 ) -> AsyncIterator[list[Subject]]:
     subjects: list[Subject] = []
+    unique_letters = quarter_of_ascii_letters_any_case(3)
     async with active_session():
         for i in range(SUBJECT_LIST_SIZE):
             subjects.append(
@@ -137,6 +139,7 @@ async def subjects(
                             if i % 2 == 0
                             else odd_subject_name_suffix
                         ),
+                        unique_letter=unique_letters[i],
                     ),
                     tutor_id=None if i % 2 == 0 else tutor_user_id,
                 )
diff --git a/tests/subscriptions/functional/test_promocodes_list_mub.py b/tests/subscriptions/functional/test_promocodes_list_mub.py
index 0117c4f1..ac030ee4 100644
--- a/tests/subscriptions/functional/test_promocodes_list_mub.py
+++ b/tests/subscriptions/functional/test_promocodes_list_mub.py
@@ -30,7 +30,10 @@ async def promocodes(
             for i in range(PROMOCODES_LIST_SIZE)
         ]
 
-    promocodes.sort(key=lambda promocode: promocode.created_at, reverse=True)
+    promocodes.sort(
+        key=lambda promocode: (promocode.created_at, promocode.id),
+        reverse=True,
+    )
 
     yield promocodes