diff --git a/data/apps/cvtt_musvc_sim.cfg b/data/apps/cvtt_musvc_sim.cfg
index f186318..ec5a66d 100644
--- a/data/apps/cvtt_musvc_sim.cfg
+++ b/data/apps/cvtt_musvc_sim.cfg
@@ -231,6 +231,7 @@
         }
         , "pre-subscribe": {
             "interval_sec": 60
+            , "history_depth"
             , "instruments": [
                 {
                     "exch_acct": "COINBASE_AT"