diff --git a/ocpp/v201/enums.py b/ocpp/v201/enums.py
index 1e0410143..2f903ca75 100644
--- a/ocpp/v201/enums.py
+++ b/ocpp/v201/enums.py
@@ -97,7 +97,7 @@ def __init__(self, *args, **kwargs):
     clear_display_message = "ClearDisplayMessage"
     cleared_charging_limit = "ClearedChargingLimit"
     clear_variable_monitoring = "ClearVariableMonitoring"
-    cost_update = "CostUpdate"
+    cost_updated = "CostUpdated"
     customer_information = "CustomerInformation"
     data_transfer = "DataTransfer"
     delete_certificate = "DeleteCertificate"