diff --git a/data/apps/cvtt_musvc.cfg b/data/apps/cvtt_musvc.cfg
index c4b9d04..b1f6647 100644
--- a/data/apps/cvtt_musvc.cfg
+++ b/data/apps/cvtt_musvc.cfg
@@ -206,7 +206,8 @@
         , "channel_prefix": "${GLOBAL_CHANNEL_PREFIX}.PXER."
         , "historical_md": {
             "db": {
-                "cred_key": "TSDB-CLD32-PROD-OHLCV-DIRECT-RO"
+                # "cred_key": "TSDB-CLD32-PROD-OHLCV-DIRECT-RO"
+                "cred_key": "TSDB-CLD32-TESTER-DCKR-CMPS"
             }
             , "enable_mda_recording": false # RO account is used
         }