diff --git a/psycop/projects/t2d/feature_generation/specify_features.py b/psycop/projects/t2d/feature_generation/specify_features.py
index 93f0d28e7..8b9fed6b1 100644
--- a/psycop/projects/t2d/feature_generation/specify_features.py
+++ b/psycop/projects/t2d/feature_generation/specify_features.py
@@ -163,7 +163,7 @@ def _get_outcome_specs(self) -> list[OutcomeSpec]:
                     feature_base_name="first_diabetes_lab_result",
                     timeseries_df=get_first_diabetes_lab_result_above_threshold(),
                     lookahead_days=365,
-                    aggregation_fn=max,
+                    aggregation_fn=maximum,
                     fallback=0,
                     incident=True,
                     prefix=self.project_info.prefix.outcome,
@@ -334,7 +334,7 @@ def _get_temporal_predictor_specs(self) -> list[PredictorSpec]:
                     feature_base_name="hba1c",
                     timeseries_df=hba1c(),
                     lookbehind_days=9999,
-                    aggregation_fn=max,
+                    aggregation_fn=maximum,
                     fallback=np.nan,
                     prefix=self.project_info.prefix.predictor,
                 ),