diff --git a/src/egon/data/datasets/hydrogen_etrago/power_to_h2.py b/src/egon/data/datasets/hydrogen_etrago/power_to_h2.py
index c9546892f..6e406b93e 100755
--- a/src/egon/data/datasets/hydrogen_etrago/power_to_h2.py
+++ b/src/egon/data/datasets/hydrogen_etrago/power_to_h2.py
@@ -767,7 +767,7 @@ def create_link_dataframes(links_h2, links_heat, links_O2):
                     "carrier": "PtH2_O2",
                     "efficiency": 1,  
                     "lifetime": 25,  
-                    "p_nom": o2_ec_h,  
+                    "p_nom": o2_ec,  
                     "p_nom_max": float('inf'),  
                     "p_nom_extendable": True,
                     "capital_cost": capital_costs,