diff --git a/aid/provide/routers/trains.py b/aid/provide/routers/trains.py
index 750ddc4..8b192e7 100644
--- a/aid/provide/routers/trains.py
+++ b/aid/provide/routers/trains.py
@@ -5,9 +5,10 @@
 import pandas as pd
 from fastapi import APIRouter, Security, status
 from pydantic import BaseModel
+from starlette.responses import Response
 
 from aid.provide.dependencies import get_api_key
-from aid.provide.ns_trains import TrainRecord, NSTrainProvider, TrainType
+from aid.provide.ns_trains import TrainRecord, NSTrainProvider
 from aid.provide.response import CSVResponse
 
 router = APIRouter(prefix="/trains", tags=["trains"], dependencies=[Security(get_api_key)])
@@ -67,7 +68,7 @@ def get_records_keyed_by_timestamp(start: datetime | None = None, end: datetime
 
 
 @router.get("/pivoted", response_class=CSVResponse)
-def get_pivoted_data(start: datetime | None = None, end: datetime | None = None):
+def get_pivoted_data(start: datetime | None = None, end: datetime | None = None) -> str:
     """
     Get train locations pivoted for use in TouchDesigner.
     Start and end parameters work the same as in `/records`.
@@ -75,7 +76,7 @@ def get_pivoted_data(start: datetime | None = None, end: datetime | None = None)
     records = _records(start, end)
     if not records:
         print("No records")
-        return status.HTTP_204_NO_CONTENT
+        return Response(status_code=status.HTTP_204_NO_CONTENT)  # type: ignore
 
     df = pd.DataFrame.from_records([rec.model_dump() for rec in records])
 
@@ -96,14 +97,17 @@ def get_pivoted_data(start: datetime | None = None, end: datetime | None = None)
     return df.to_csv(index=False)
 
 
-@router.get("/types")
-def get_train_types(start: datetime | None = None, end: datetime | None = None) -> list[TrainType]:
+@router.get("/types", response_class=CSVResponse)
+def get_train_types(start: datetime | None = None, end: datetime | None = None) -> str:
     """
     Get train types for the requested period.
     """
     end = end or datetime.now()
     start = start or end - timedelta(seconds=10)
-    return NSTrainProvider().get_train_types(start, end)
+    records = NSTrainProvider().get_train_types(start, end)
+
+    df = pd.DataFrame.from_records([rec.model_dump() for rec in records])
+    return df.to_csv(index=False)
 
 
 if __name__ == "__main__":