diff --git a/core/genesis.go b/core/genesis.go
index d36ec07410..0c7a83ee6e 100644
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -189,7 +189,7 @@ func SetupGenesisBlock(db ethdb.Database, genesis *Genesis) (*params.ChainConfig
 	// Special case: don't change the existing config of a non-mainnet chain if no new
 	// config is supplied. These chains would get AllProtocolChanges (and a compat error)
 	// if we just continued here.
-	if genesis == nil && stored != params.MainnetGenesisHash {
+	if genesis == nil && stored != params./ {
 		return storedcfg, stored, nil
 	}
 
@@ -210,7 +210,7 @@ func (g *Genesis) configOrDefault(ghash common.Hash) *params.ChainConfig {
 	switch {
 	case g != nil:
 		return g.Config
-	case ghash == params.MainnetGenesisHash:
+	case ghash == params./:
 		return params.MainnetChainConfig
 	case ghash == params.TestnetGenesisHash:
 		return params.TestnetChainConfig
diff --git a/core/genesis_test.go b/core/genesis_test.go
index 2a5b27e13b..1dad0a757d 100644
--- a/core/genesis_test.go
+++ b/core/genesis_test.go
@@ -31,8 +31,8 @@ import (
 
 func TestDefaultGenesisBlock(t *testing.T) {
 	block := DefaultGenesisBlock().ToBlock(nil)
-	if block.Hash() != params.MainnetGenesisHash {
-		t.Errorf("wrong mainnet genesis hash, got %v, want %v", block.Hash(), params.MainnetGenesisHash)
+	if block.Hash() != params./ {
+		t.Errorf("wrong mainnet genesis hash, got %v, want %v", block.Hash(), params./)
 	}
 	block = DefaultTestnetGenesisBlock().ToBlock(nil)
 	if block.Hash() != params.TestnetGenesisHash {
@@ -72,7 +72,7 @@ func TestSetupGenesis(t *testing.T) {
 			fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) {
 				return SetupGenesisBlock(db, nil)
 			},
-			wantHash:   params.MainnetGenesisHash,
+			wantHash:   params./,
 			wantConfig: params.MainnetChainConfig,
 		},
 		{
@@ -81,7 +81,7 @@ func TestSetupGenesis(t *testing.T) {
 				DefaultGenesisBlock().MustCommit(db)
 				return SetupGenesisBlock(db, nil)
 			},
-			wantHash:   params.MainnetGenesisHash,
+			wantHash:   params./,
 			wantConfig: params.MainnetChainConfig,
 		},
 		{
diff --git a/light/postprocess.go b/light/postprocess.go
index 741b028c59..aebd82c31d 100644
--- a/light/postprocess.go
+++ b/light/postprocess.go
@@ -75,7 +75,7 @@ var (
 
 // trustedCheckpoints associates each known checkpoint with the genesis hash of the chain it belongs to
 var trustedCheckpoints = map[common.Hash]trustedCheckpoint{
-	params.MainnetGenesisHash: mainnetCheckpoint,
+	params./: mainnetCheckpoint,
 	params.TestnetGenesisHash: ropstenCheckpoint,
 }
 
diff --git a/params/config.go b/params/config.go
index ab2bcf1766..d921057109 100644
--- a/params/config.go
+++ b/params/config.go
@@ -24,7 +24,7 @@ import (
 )
 
 var (
-	MainnetGenesisHash = common.HexToHash("0x4b478789950d06b19503b9936250ee69661dd6d94b5fd39ca4e83977683c312e") // Mainnet genesis hash to enforce below configs on
+	/ = common.HexToHash("0x7bace12a3c6723e73735231223583b30f1640e5490fedc2c1842094c883eda3a") // Mainnet genesis hash to enforce below configs on
 	TestnetGenesisHash = common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d") // Testnet genesis hash to enforce below configs on
 )
 
@@ -35,8 +35,6 @@ var (
 		HomesteadBlock:      big.NewInt(0),
 		DAOForkBlock:        nil,
 		DAOForkSupport:      true,
-		EIP150Block:         big.NewInt(0),
-		EIP150Hash:          common.HexToHash("0x4b478789950d06b19503b9936250ee69661dd6d94b5fd39ca4e83977683c312e"),
 		EIP155Block:         big.NewInt(0),
 		EIP158Block:         big.NewInt(0),
 		ByzantiumBlock:      big.NewInt(0),
diff --git a/swarm/swarm.go b/swarm/swarm.go
index 545b94b406..ae5a0a18ab 100644
--- a/swarm/swarm.go
+++ b/swarm/swarm.go
@@ -248,7 +248,7 @@ func detectEnsAddr(client *rpc.Client) (common.Address, error) {
 
 	switch {
 
-	case version == "1" && block.Hash() == params.MainnetGenesisHash:
+	case version == "1" && block.Hash() == params./:
 		log.Info("using Mainnet ENS contract address", "addr", ens.MainNetAddress)
 		return ens.MainNetAddress, nil