diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index c7080f630..8fdbac6ed 100644
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -2358,7 +2358,7 @@ def add_biomass(n, costs):
             * costs.at["solid biomass", "CO2 intensity"],
             p_nom_extendable=True,
         )
-    
+
     e_max_pu = pd.Series([1] * (len(n.snapshots) - 1) + [0], index=n.snapshots)
     n.madd(
         "Store",