diff --git a/core-chain/mainnet/config.toml b/core-chain/mainnet/config.toml
index e60137bb..5a384b37 100644
--- a/core-chain/mainnet/config.toml
+++ b/core-chain/mainnet/config.toml
@@ -3,7 +3,7 @@ NetworkId = 1116
 NoPruning = false
 NoPrefetch = false
 LightPeers = 100
-UltraLightFraction = 75
+#UltraLightFraction = 75
 TrieTimeout = 100000000000
 EnablePreimageRecording = false
 EWASMInterpreter = ""
@@ -14,7 +14,7 @@ GasFloor = 30000000
 GasCeil = 40000000
 GasPrice = 30000000000
 Recommit = 10000000000
-Noverify = false
+#Noverify = false
 
 [Eth.TxPool]
 Locals = []