diff --git a/cardano-testnet/src/Testnet/Defaults.hs b/cardano-testnet/src/Testnet/Defaults.hs
index fdfb5c06fa4..bae90ad5282 100644
--- a/cardano-testnet/src/Testnet/Defaults.hs
+++ b/cardano-testnet/src/Testnet/Defaults.hs
@@ -76,6 +76,7 @@ import qualified Data.Text as Text
 import           Data.Time (UTCTime)
 import qualified Data.Vector as Vector
 import           Data.Word (Word64)
+import           GHC.Exts (IsList (..))
 import           Lens.Micro
 import           Numeric.Natural
 import           System.FilePath ((</>))
@@ -161,6 +162,7 @@ defaultYamlHardforkViaConfig :: ShelleyBasedEra era -> Aeson.KeyMap Aeson.Value
 defaultYamlHardforkViaConfig sbe =
   defaultYamlConfig
     <> tracers
+    <> fromList [("TraceOptions", Aeson.Object mempty)]
     <> protocolVersions sbe
     <> hardforkViaConfig sbe
  where
diff --git a/cardano-testnet/src/Testnet/Property/Assert.hs b/cardano-testnet/src/Testnet/Property/Assert.hs
index 6b83481aef1..7b52c65e0ae 100644
--- a/cardano-testnet/src/Testnet/Property/Assert.hs
+++ b/cardano-testnet/src/Testnet/Property/Assert.hs
@@ -117,7 +117,7 @@ assertChainExtended deadline nodeLoggingFormat nodeStdoutFile = withFrozenCallSt
     case nodeLoggingFormat of
       NodeLoggingFormatAsText -> IO.fileContains "Chain extended, new tip" nodeStdoutFile
       NodeLoggingFormatAsJson -> fileJsonGrep nodeStdoutFile $ \v ->
-                                    Aeson.parseMaybe (Aeson.parseJSON @(LogEntry Kind)) v == Just (LogEntry (Kind "TraceAddBlockEvent.AddedToCurrentChain"))
+                                    Aeson.parseMaybe (Aeson.parseJSON @(LogEntry Kind)) v == Just (LogEntry (Kind "AddedToCurrentChain"))
 
 newtype LogEntry a = LogEntry
   { unLogEntry :: a