diff --git a/data/refdata/exchanges.cfg b/data/refdata/exchanges.cfg
index 6ae45c3..5a50b92 100644
--- a/data/refdata/exchanges.cfg
+++ b/data/refdata/exchanges.cfg
@@ -291,8 +291,8 @@
         , "type":               "SPOT"
 
         , "mktdata" : {
-            # "class":  "cvttpy_trading.exchanges.coinbase.spot.mkt_data.CoinbaseSpotMdFeed"
-            "class":  "cvttpy_trading.exchanges.coinbase.spot.mkt_data.CoinbaseMdFeed"
+            "class":  "cvttpy_trading.exchanges.coinbase.spot.mkt_data.CoinbaseSpotMdFeed"
+            # "class":  "cvttpy_trading.exchanges.coinbase.spot.mkt_data.CoinbaseMdFeed"
 
             , "reconnect_secs": 2
             , "max_connections": 10