diff --git a/params/util.go b/params/util.go
index 16c2022dbc..a7e62575e6 100644
--- a/params/util.go
+++ b/params/util.go
@@ -33,11 +33,11 @@ var (
 	MainNetHomesteadGasRepriceBlock = big.NewInt(0) // Mainnet gas reprice block
 
 	TestNetHomesteadGasRepriceHash = common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d") // Testnet gas reprice block hash (used by fast sync)
-	MainNetHomesteadGasRepriceHash = common.HexToHash("0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0") // Mainnet gas reprice block hash (used by fast sync)
+	MainNetHomesteadGasRepriceHash = common.HexToHash("0x406f1b7dd39fca54d8c702141851ed8b755463ab5b560e6f19b963b4047418af") // Mainnet gas reprice block hash (used by fast sync)
 
 	TestNetSpuriousDragon = big.NewInt(10)
 	MainNetSpuriousDragon = big.NewInt(10)
 
-	TestNetChainID = big.NewInt(3) // Test net default chain ID
+	TestNetChainID = big.NewInt(9) // Test net default chain ID
 	MainNetChainID = big.NewInt(8) // main net default chain ID
 )