diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index 4e736176a..c7080f630 100644
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -2358,8 +2358,8 @@ def add_biomass(n, costs):
             * costs.at["solid biomass", "CO2 intensity"],
             p_nom_extendable=True,
         )
-
-    e_max_pu = pd.Series([1] * (len(snapshots) - 1) + [0], index=n.snapshots)
+    
+    e_max_pu = pd.Series([1] * (len(n.snapshots) - 1) + [0], index=n.snapshots)
     n.madd(
         "Store",
         spatial.msw.nodes,