diff --git a/weblate/lang/management/commands/setuplang.py b/weblate/lang/management/commands/setuplang.py
index c9ffcb02c6ff..bf822509c808 100644
--- a/weblate/lang/management/commands/setuplang.py
+++ b/weblate/lang/management/commands/setuplang.py
@@ -2,6 +2,8 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+from __future__ import annotations
+
 from weblate.lang.models import Language
 from weblate.utils.management.base import BaseCommand
 
@@ -20,7 +22,7 @@ def add_arguments(self, parser) -> None:
 
     def handle(self, *args, **options) -> None:
         """Create default set of languages."""
-        kwargs = {}
-        if options["verbosity"] >= 1:
-            kwargs["logger"] = self.stdout.write
-        Language.objects.setup(options["update"], **kwargs)
+        Language.objects.setup(
+            update=options["update"],
+            logger=self.stdout.write if options["verbosity"] >= 1 else None,
+        )
diff --git a/weblate/lang/models.py b/weblate/lang/models.py
index 4d113abf9d27..77de2a1aaecc 100644
--- a/weblate/lang/models.py
+++ b/weblate/lang/models.py
@@ -453,6 +453,10 @@ def prefetch(self):
         return self.prefetch_related("plural_set")
 
 
+def dummy_logger(message: str) -> None:
+    return
+
+
 class LanguageManager(models.Manager.from_queryset(LanguageQuerySet)):
     use_in_migrations = True
 
@@ -465,7 +469,12 @@ def default_language(self):
         """Return English language object."""
         return self.get(code=settings.DEFAULT_LANGUAGE, skip_cache=True)
 
-    def setup(self, update, logger=lambda x: x) -> None:  # noqa: C901
+    def setup(  # noqa: C901
+        self,
+        *,
+        update: bool,
+        logger: Callable[[str], None] | None = None,
+    ) -> None:
         """
         Create basic set of languages.
 
@@ -474,6 +483,9 @@ def setup(self, update, logger=lambda x: x) -> None:  # noqa: C901
         from weblate_language_data.languages import LANGUAGES
         from weblate_language_data.population import POPULATION
 
+        if logger is None:
+            logger = dummy_logger
+
         # Invalidate cache, we might change languages
         self.flush_object_cache()
         languages = {
@@ -610,8 +622,15 @@ def setup(self, update, logger=lambda x: x) -> None:  # noqa: C901
 
         self._fixup_plural_types(logger)
 
-    def move_language(self, source: Language, target: Language, logger=lambda x: x):
+    def move_language(
+        self,
+        source: Language,
+        target: Language,
+        logger: Callable[[str], None] | None = None,
+    ):
         """Migrate all content from one language to anoother."""
+        if logger is None:
+            logger = dummy_logger
         for translation in source.translation_set.iterator():
             other = translation.component.translation_set.filter(language=target)
             if other.exists():
@@ -672,7 +691,7 @@ def setup_lang(sender, **kwargs) -> None:
     """Create basic set of languages on database migration."""
     if settings.UPDATE_LANGUAGES:
         with transaction.atomic():
-            Language.objects.setup(True)
+            Language.objects.setup(update=True)
 
 
 class Language(models.Model, CacheKeyMixin):
diff --git a/weblate/lang/tests.py b/weblate/lang/tests.py
index 89638add6034..ef7106f67b46 100644
--- a/weblate/lang/tests.py
+++ b/weblate/lang/tests.py
@@ -856,7 +856,7 @@ def component_language_codes():
 
         self.assertIn(self.old_code, component_language_codes())
         logs: list[str] = []
-        Language.objects.setup(True, logs.append)
+        Language.objects.setup(update=True, logger=logs.append)
         if new_language_created:
             self.assertIn(f"Created language {self.new_code}", logs)
         else: