diff --git a/boefjes/boefjes/__main__.py b/boefjes/boefjes/__main__.py
index 0805fcf5158..e79fb806b77 100644
--- a/boefjes/boefjes/__main__.py
+++ b/boefjes/boefjes/__main__.py
@@ -1,11 +1,13 @@
 import json
 import logging.config
+import typing
 
 import click
 import structlog
 
 from boefjes.app import get_runtime_manager
 from boefjes.config import settings
+from boefjes.runtime_interfaces import WorkerManager
 
 with settings.log_cfg.open() as f:
     logging.config.dictConfig(json.load(f))
@@ -34,9 +36,9 @@
 
 
 @click.command()
-@click.argument("worker_type", type=click.Choice(["boefje", "normalizer"]))
+@click.argument("worker_type", type=click.Choice(typing.get_args(WorkerManager.WorkerType)))
 @click.option("--log-level", type=click.Choice(["DEBUG", "INFO", "WARNING", "ERROR"]), help="Log level", default="INFO")
-def cli(worker_type: str, log_level: str) -> None:
+def cli(worker_type: WorkerManager.WorkerType, log_level: str) -> None:
     logger.setLevel(log_level)
     logger.info("Starting runtime for %s", worker_type)
 
diff --git a/boefjes/boefjes/app.py b/boefjes/boefjes/app.py
index 86685453362..6c8a7058d50 100644
--- a/boefjes/boefjes/app.py
+++ b/boefjes/boefjes/app.py
@@ -265,7 +265,7 @@ def _start_working(
                 logger.exception("Could not patch scheduler task to %s", status.value)
 
 
-def get_runtime_manager(settings: Settings, queue: str, log_level: str) -> WorkerManager:
+def get_runtime_manager(settings: Settings, queue: WorkerManager.WorkerType, log_level: str) -> WorkerManager:
     local_repository = get_local_repository()
 
     session = sessionmaker(bind=get_engine())()
diff --git a/boefjes/boefjes/config.py b/boefjes/boefjes/config.py
index 8299dad166f..d1e5bdc3c0a 100644
--- a/boefjes/boefjes/config.py
+++ b/boefjes/boefjes/config.py
@@ -8,6 +8,7 @@
 from pydantic_settings.sources import EnvSettingsSource
 
 from boefjes.models import EncryptionMiddleware
+from boefjes.runtime_interfaces import WorkerManager
 
 BASE_DIR: Path = Path(__file__).parent.resolve()
 
@@ -132,7 +133,7 @@ class Settings(BaseSettings):
         examples=[[], ["ipv4", "wifi-pineapple"]],
     )
 
-    runner_type: Literal["boefje", "normalizer"] = Field(None, examples=["boefje", "normalizer"])
+    runner_type: WorkerManager.WorkerType | None = Field(None, examples=["boefje", "normalizer"])
 
     logging_format: Literal["text", "json"] = Field("text", description="Logging format")
 
diff --git a/boefjes/boefjes/runtime_interfaces.py b/boefjes/boefjes/runtime_interfaces.py
index dab3c8bfdfc..be31610a370 100644
--- a/boefjes/boefjes/runtime_interfaces.py
+++ b/boefjes/boefjes/runtime_interfaces.py
@@ -1,3 +1,5 @@
+from typing import Literal
+
 from boefjes.job_models import BoefjeMeta, NormalizerMeta, NormalizerResults
 
 
@@ -17,7 +19,9 @@ def run(self, normalizer_meta: NormalizerMeta, raw: bytes) -> NormalizerResults:
 
 
 class WorkerManager:
-    def run(self, queue: str) -> None:
+    WorkerType = Literal["boefje", "normalizer"]
+
+    def run(self, queue: WorkerType) -> None:
         raise NotImplementedError()
 
 
diff --git a/boefjes/entrypoint.sh b/boefjes/entrypoint.sh
index 4e15b8de5ac..968d2f4052a 100755
--- a/boefjes/entrypoint.sh
+++ b/boefjes/entrypoint.sh
@@ -17,7 +17,7 @@ if [ "$DATABASE_MIGRATION" = "1" ] || [[ $DATABASE_MIGRATION == "true" ]]; then
 fi
 
 if [ "$1" = "katalogus" ]; then
-    exec env BOEFJES_RUNNER_TYPE="$1" python -m uvicorn --host 0.0.0.0 boefjes.katalogus.root:app
+    exec python -m uvicorn --host 0.0.0.0 boefjes.katalogus.root:app
 fi
 
 exec "$@"