diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index bc714096..6ca06c9a 100755
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -3425,7 +3425,7 @@ def cluster_heat_buses(n):
 
 
 def apply_time_segmentation(
-    n, segments, solver_name="cbc", overwrite_time_dependent=True
+    n, segments, solver_name="cbc", overwrite_time_dependent=True, drop_leap_day=False
 ):
     """
     Aggregating time series to segments with different lengths.