diff --git a/config.default.yaml b/config.default.yaml
index 1fbc4deb..cd5e16f2 100755
--- a/config.default.yaml
+++ b/config.default.yaml
@@ -599,8 +599,6 @@ costs:
     battery inverter: 0.
   emission_prices: # in currency per tonne emission, only used with the option Ep
     co2: 0.
-  lines:
-    length_factor: 1.25 #to estimate offwind connection costs
 
 clustering:
   simplify_network:
diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index 3c0ed11d..dd25ec38 100644
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -386,7 +386,7 @@ def update_wind_solar_costs(n, costs):
         with xr.open_dataset(profile) as ds:
             underwater_fraction = ds["underwater_fraction"].to_pandas()
             connection_cost = (
-                snakemake.config["costs"]["lines"]["length_factor"]
+                snakemake.config["lines"]["length_factor"]
                 * ds["average_distance"].to_pandas()
                 * (
                     underwater_fraction