diff --git a/params/util.go b/params/util.go
index 0a14f0374..6a49a2013 100644
--- a/params/util.go
+++ b/params/util.go
@@ -20,7 +20,7 @@ import "math/big"
 
 var (
 	TestNetHomesteadBlock = big.NewInt(494000)    // testnet homestead block
-	MainNetHomesteadBlock = big.NewInt(2000000)   // mainnet homestead block
+	MainNetHomesteadBlock = big.NewInt(1150000)   // mainnet homestead block
 	HomesteadBlock        = MainNetHomesteadBlock // homestead block used to check against
 )