diff --git a/data/apps/cvtt_musvc_sim.cfg b/data/apps/cvtt_musvc_sim.cfg
index b3598e5..9b25a57 100644
--- a/data/apps/cvtt_musvc_sim.cfg
+++ b/data/apps/cvtt_musvc_sim.cfg
@@ -225,7 +225,8 @@
         , "historical_md": {
             "db": {
                 # "cred_key": "TSDB-CLD32-PROD-OHLCV-DIRECT-RO"
-                "cred_key": "TSDB-CLD32-TESTER-DCKR-CMPS"
+                # "cred_key": "TSDB-CLD32-TESTER-DCKR-CMPS"
+                "cred_key": "TSDB-CLD32-TESTER-DIRECT-RO"
             }
             , "enable_mda_recording": false # RO account is used
         }