diff --git a/rules/solve_perfect.smk b/rules/solve_perfect.smk
index ad310f9f..76051976 100644
--- a/rules/solve_perfect.smk
+++ b/rules/solve_perfect.smk
@@ -17,6 +17,8 @@ rule add_existing_baseyear:
         costs="data/costs_{}.csv".format(config["scenario"]["planning_horizons"][0]),
         cop_soil_total=RESOURCES + "cop_soil_total_elec_s{simpl}_{clusters}.nc",
         cop_air_total=RESOURCES + "cop_air_total_elec_s{simpl}_{clusters}.nc",
+        existing_heating_distribution=RESOURCES
+        + "existing_heating_distribution_elec_s{simpl}_{clusters}_{planning_horizons}.csv",
         existing_heating="data/existing_infrastructure/existing_heating_raw.csv",
         existing_solar="data/existing_infrastructure/solar_capacity_IRENA.csv",
         existing_onwind="data/existing_infrastructure/onwind_capacity_IRENA.csv",