diff --git a/src/open_inwoner/accounts/backends.py b/src/open_inwoner/accounts/backends.py
index e60b115f57..b979e1c6bc 100644
--- a/src/open_inwoner/accounts/backends.py
+++ b/src/open_inwoner/accounts/backends.py
@@ -27,29 +27,31 @@ class UserModelEmailBackend(ModelBackend):
     """
 
     def authenticate(self, request, username=None, password=None):
+        if not username or not password:
+            return
+
         User = get_user_model()
-        if username and password:
-            try:
-                user = User.objects.get(
-                    email__iexact=username,
-                    login_type=LoginTypeChoices.default,
-                )
-                if check_password(
-                    password, user.password
-                ) and self.user_can_authenticate(user):
-                    return user
-            except User.MultipleObjectsReturned:
-                # Found multiple users with this email (shouldn't happen if we added checks)
-                # Run the default password hasher once to reduce the timing
-                # difference between an existing and a nonexistent user (#20760).
-                User().set_password(password)
-                return None
-            except User.DoesNotExist:
-                # No user was found, return None - triggers default login failed
-                # Run the default password hasher once to reduce the timing
-                # difference between an existing and a nonexistent user (#20760).
-                User().set_password(password)
-                return None
+        try:
+            user = User.objects.get(
+                email__iexact=username,
+                login_type=LoginTypeChoices.default,
+            )
+            if check_password(password, user.password) and self.user_can_authenticate(
+                user
+            ):
+                return user
+        except User.MultipleObjectsReturned:
+            # Found multiple users with this email (shouldn't happen if we added checks)
+            # Run the default password hasher once to reduce the timing
+            # difference between an existing and a nonexistent user (#20760).
+            User().set_password(password)
+            return None
+        except User.DoesNotExist:
+            # No user was found, return None - triggers default login failed
+            # Run the default password hasher once to reduce the timing
+            # difference between an existing and a nonexistent user (#20760).
+            User().set_password(password)
+            return None
 
 
 class Verify2FATokenBackend(BaseBackend):
@@ -58,17 +60,18 @@ class Verify2FATokenBackend(BaseBackend):
     """
 
     def authenticate(self, request, *, user=None, token=None):
-        # 2FA with sms verification
-        if user and token:
-            accepted, drift = accept_totp(
-                key=user.seed,
-                response=token,
-                period=getattr(settings, "ACCOUNTS_USER_TOKEN_EXPIRE_TIME", 300),
-            )
-            if not accepted:
-                return None
+        if not user or not token:
+            return
 
-            return user
+        accepted, drift = accept_totp(
+            key=user.seed,
+            response=token,
+            period=getattr(settings, "ACCOUNTS_USER_TOKEN_EXPIRE_TIME", 300),
+        )
+        if not accepted:
+            return None
+
+        return user
 
 
 class CustomAxesBackend(AxesBackend):
diff --git a/src/open_inwoner/accounts/tests/test_backends.py b/src/open_inwoner/accounts/tests/test_backends.py
index 2b3c5e8aad..46ccde4b4b 100644
--- a/src/open_inwoner/accounts/tests/test_backends.py
+++ b/src/open_inwoner/accounts/tests/test_backends.py
@@ -87,7 +87,7 @@ class UserModelEmailBackendTestCase(TestCase):
     def setUpTestData(cls):
         super().setUpTestData()
 
-        cls.password = "keepitsecert"
+        cls.password = "keepitsecret"
         cls.user = UserFactory(
             login_type=LoginTypeChoices.default, password=cls.password
         )
@@ -142,6 +142,7 @@ def test_missing_username_and_or_password_returns_none(self):
         "open_inwoner.accounts.backends.Verify2FATokenBackend",
     ]
 )
+@freeze_time("2023-05-22 12:05:01")
 class Verify2FATokenBackendTestCase(TestCase):
     @classmethod
     def setUpTestData(cls):
@@ -151,7 +152,6 @@ def setUpTestData(cls):
         cls.expires_in = getattr(settings, "ACCOUNTS_USER_TOKEN_EXPIRE_TIME", 300)
         cls.make_token = lambda: totp(cls.user.seed, period=cls.expires_in)
 
-    @freeze_time("2023-05-22 12:05:01")
     def test_valid_token_and_user_returns_user(self):
         request = RequestFactory().get(reverse("verify_token"))