diff --git a/src/calculation_target_reliability/service.py b/src/calculation_target_reliability/service.py
index 8f61571..8e563a7 100644
--- a/src/calculation_target_reliability/service.py
+++ b/src/calculation_target_reliability/service.py
@@ -114,7 +114,7 @@ def calculate_asset_eaf_contributions(plant_result, eq_results, plot_result):
 
     for asset in eq_results:
         # Weight based on production capacity
-        capacity_weight = asset.get('production', 0) / plant_production if plant_productions > 0 else 0
+        capacity_weight = asset.get('production', 0) / plant_production if plant_production > 0 else 0
         plot_data = next((item for item in plot_result if item['aeros_node']['node_name'] == asset['aeros_node']['node_name']), None)
 
         # Get asset EAF and downtime