diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index ceb7764e..4e7e0374 100755
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -3486,7 +3486,7 @@ def apply_time_segmentation(
     return n
 
 
-def set_temporal_aggregation(n, resolution, solver_name, drop_leap_day=False):
+def set_temporal_aggregation(n, resolution, solver_name):
     """
     Aggregate network temporally.
     """