diff --git a/data/apps/cvtt_musvc_sim.cfg b/data/apps/cvtt_musvc_sim.cfg
index 3c9940e..be6922c 100644
--- a/data/apps/cvtt_musvc_sim.cfg
+++ b/data/apps/cvtt_musvc_sim.cfg
@@ -230,7 +230,8 @@
             , "enable_mda_recording": false # RO account is used
         }
         , "pre-subscribe": {
-            "instruments": [
+            "interval_sec": 60
+            , "instruments": [
                 {
                     "exch_acct": "COINBASE_AT"
                     , "instrument_id": "PAIR-ADA-USD"