diff --git a/models/enercoop_operation.py b/models/enercoop_operation.py
index 0c69de1ab4ea2c1acc1720d82f9e942dd8e230a3..e5cc8bf04d68fc770ed523ef8b4717178fc1f7ac 100644
--- a/models/enercoop_operation.py
+++ b/models/enercoop_operation.py
@@ -69,7 +69,7 @@ class EnercoopOperation(models.Model):
             self.definitive_load_curves(date_start, date_end, 'prod', injection_counter_id.enercoop_counter_id.name, token=token)
 
         # Load surplus data by operation
-        self.definitive_load_curves(date_start, date_end, 'surplus', None, token=token)
+        self.definitive_load_curves(date_start, date_end, 'surplus', usage_point_name=None, token=token)
 
     def get_perimeter(self):
         for operation in self: