diff --git a/data/conf/samples/gocs/us_site/cgrates.json b/data/conf/samples/gocs/us_site/cgrates.json
index 6d8fa20b2..926ceef7c 100644
--- a/data/conf/samples/gocs/us_site/cgrates.json
+++ b/data/conf/samples/gocs/us_site/cgrates.json
@@ -89,6 +89,7 @@
 
   "sessions": {
     "enabled": true,
+    "store_session_costs": true,
     "listen_bijson": ":4014",
     "rals_conns": ["*internal"],
     "cdrs_conns": ["*internal"],