diff --git a/server/lib/python/cartodb_services/cartodb_services/metrics/config.py b/server/lib/python/cartodb_services/cartodb_services/metrics/config.py
index 4ae7ece..f3e93d0 100644
--- a/server/lib/python/cartodb_services/cartodb_services/metrics/config.py
+++ b/server/lib/python/cartodb_services/cartodb_services/metrics/config.py
@@ -276,6 +276,7 @@ class IsolinesRoutingConfig(ServiceConfig):
     def mapzen_matrix_service_params(self):
         return self._mapzen_matrix_service_params
 
+    @property
     def mapzen_isochrones_service_params(self):
         return self._mapzen_isochrones_service_params