diff --git a/src/database.py b/src/database.py
index c27c2439..7ef3b37a 100644
--- a/src/database.py
+++ b/src/database.py
@@ -153,7 +153,11 @@ def get_forecasts_from_database(
         else:
             forecasts = [Forecast.from_orm(forecast) for forecast in forecasts]
 
-        forecasts = filter_forecast_values(end_datetime_utc, forecasts, start_datetime_utc)
+        forecasts = filter_forecast_values(
+            end_datetime_utc=end_datetime_utc,
+            forecasts=forecasts,
+            start_datetime_utc=start_datetime_utc,
+        )
 
         # return as many forecasts
         return ManyForecasts(forecasts=forecasts)
diff --git a/src/tests/test_gsp.py b/src/tests/test_gsp.py
index 9a924c27..c01a8460 100644
--- a/src/tests/test_gsp.py
+++ b/src/tests/test_gsp.py
@@ -60,7 +60,7 @@ def test_read_latest_all_gsp(db_session, api_client):
 
     r = ManyForecasts(**response.json())
     assert len(r.forecasts) == 10
-    assert len(r.forecasts[0].forecast_values) == 112
+    assert len(r.forecasts[0].forecast_values) == 40
 
 
 def test_read_latest_gsp_id_greater_than_total(db_session, api_client):
diff --git a/src/utils.py b/src/utils.py
index 15908713..fc0d60c5 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -5,7 +5,7 @@
 
 import numpy as np
 import structlog
-from nowcasting_datamodel.models import ForecastSQL, ForecastValue
+from nowcasting_datamodel.models import Forecast, ForecastValue
 from pydantic import Field
 from pytz import timezone
 
@@ -182,10 +182,10 @@ def format_plevels(national_forecast_value: NationalForecastValue):
 
 
 def filter_forecast_values(
-    forecasts: List[ForecastSQL],
+    forecasts: List[Forecast],
     end_datetime_utc: Optional[datetime] = None,
     start_datetime_utc: Optional[datetime] = None,
-) -> List[ForecastSQL]:
+) -> List[Forecast]:
     """
     Filter forecast values by start and end datetime