diff --git a/data/refdata/exchanges.cfg b/data/refdata/exchanges.cfg
index 0abdce9..65a1874 100644
--- a/data/refdata/exchanges.cfg
+++ b/data/refdata/exchanges.cfg
@@ -26,7 +26,7 @@
 
             , "api": {
                 "web_socket": {
-                    "url": "wss://@env{SIM_HOST}:@env{SIM_ORDER_ENTRY_WS_PORT}"
+                    "url": "wss://@env{SIM_HOST}:@env{SIM_ORDER_ENTRY_WS_PORT}/ws"
                 }
                 , "REST": {
                     "open_orders_url": ["GET", "http://@env{SIM_HOST}:@env{SIM_ORDER_ENTRY_REST_PORT}/open_orders"]