diff --git a/boario/event.py b/boario/event.py
index 9c7a37a..cd2e03e 100644
--- a/boario/event.py
+++ b/boario/event.py
@@ -980,7 +980,7 @@ def __init__(
                         self.aff_regions, rebuilding_demand_idx
                     ] = (
                         households_impact * self.impact_regional_distrib
-                    )  # type: ignore
+                    ).to_numpy()  # type: ignore
             self.households_impact_df *= (
                 self.event_monetary_factor / self.model_monetary_factor
             )