diff --git a/scripts/prepare_sector_network.py b/scripts/prepare_sector_network.py
index 819f849b1..8335437ee 100755
--- a/scripts/prepare_sector_network.py
+++ b/scripts/prepare_sector_network.py
@@ -1752,6 +1752,19 @@ def adjust_endogenous_transport(n):
         "land transport fuel cell": cost_FCE,
         "land transport oil": cost_ICE,
     }
+    
+    # add dummy generator only needed for solving with glpk with higher solver tolerance
+    n.add("Carrier", "dummy transport", color="#dd2e23", nice_name="Dummy transport")
+    buses_i = n.buses[n.buses.carrier=="land transport demand"].index
+    n.madd(
+        "Generator",
+        buses_i,
+        " load",
+        bus=buses_i,
+        carrier="load",
+        marginal_cost=1e5,  
+        p_nom=1e9, 
+    )
 
     for car_type, cost in costs_car_type.items():
         car_i = n.links[n.links.carrier == car_type].index