diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index 6355f603..cd5d9570 100644
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -3311,6 +3311,7 @@ def lossy_bidirectional_links(n, carrier, efficiencies={}):
         n.links.loc[carrier_i].copy().rename({"bus0": "bus1", "bus1": "bus0"}, axis=1)
     )
     rev_links.capital_cost = 0
+    rev_links.length = 0
     rev_links["reversed"] = True
     rev_links.index = rev_links.index.map(lambda x: x + "-reversed")