diff --git a/data/refdata/exchanges.cfg b/data/refdata/exchanges.cfg
index 7363c91..69e6117 100644
--- a/data/refdata/exchanges.cfg
+++ b/data/refdata/exchanges.cfg
@@ -335,7 +335,8 @@
                 }
             }
             , "futures": {
-                "credentials_key": "COINBASE_ADV_RO"                
+                "credentials_key": "COINBASE_ADV_RO"
+                "class":             
                 , "api": {
                     "REST": {
                         "products_url": "https://api.coinbase.com/api/v3/brokerage/products"