diff --git a/cmd/integration/commands/stages.go b/cmd/integration/commands/stages.go
index 1b59872ed..e7f2163cf 100644
--- a/cmd/integration/commands/stages.go
+++ b/cmd/integration/commands/stages.go
@@ -1104,10 +1104,7 @@ var _allSnapshotsSingleton *snapshotsync.RoSnapshots
 
 func allSnapshots(cc *params.ChainConfig, db kv.RwDB) *snapshotsync.RoSnapshots {
 	openSnapshotOnce.Do(func() {
-		syncmode, err := ethconfig.SyncModeByChainName(cc.ChainName, syncmodeStr)
-		if err != nil {
-			panic(err)
-		}
+		syncmode := ethconfig.SyncModeByChainName(cc.ChainName, syncmodeStr)
 		snapCfg := ethconfig.NewSnapCfg(syncmode == ethconfig.SnapSync, true, true)
 		if err := db.Update(context.Background(), func(tx kv.RwTx) error { return snap.EnsureNotChanged(tx, snapCfg) }); err != nil {
 			panic(err)
diff --git a/cmd/state/commands/check_change_sets.go b/cmd/state/commands/check_change_sets.go
index a92c78bab..e80a495bb 100644
--- a/cmd/state/commands/check_change_sets.go
+++ b/cmd/state/commands/check_change_sets.go
@@ -114,10 +114,7 @@ func CheckChangeSets(genesis *core.Genesis, logger log.Logger, blockNum uint64,
 
 	var blockReader services.FullBlockReader
 	var allSnapshots *snapshotsync.RoSnapshots
-	syncMode, err := ethconfig.SyncModeByChainName(chainConfig.ChainName, syncmodeCli)
-	if err != nil {
-		return err
-	}
+	syncMode := ethconfig.SyncModeByChainName(chainConfig.ChainName, syncmodeCli)
 	if syncMode == ethconfig.SnapSync {
 		allSnapshots = snapshotsync.NewRoSnapshots(ethconfig.NewSnapCfg(true, false, true), path.Join(datadir, "snapshots"))
 		defer allSnapshots.Close()
diff --git a/cmd/state/commands/erigon2.go b/cmd/state/commands/erigon2.go
index 38fd76090..358af7ec2 100644
--- a/cmd/state/commands/erigon2.go
+++ b/cmd/state/commands/erigon2.go
@@ -224,10 +224,7 @@ func Erigon2(genesis *core.Genesis, chainConfig *params.ChainConfig, logger log.
 
 	var blockReader services.FullBlockReader
 	var allSnapshots *snapshotsync.RoSnapshots
-	syncMode, err := ethconfig.SyncModeByChainName(chainConfig.ChainName, syncmodeCli)
-	if err != nil {
-		return err
-	}
+	syncMode := ethconfig.SyncModeByChainName(chainConfig.ChainName, syncmodeCli)
 	if syncMode == ethconfig.SnapSync {
 		allSnapshots = snapshotsync.NewRoSnapshots(ethconfig.NewSnapCfg(true, false, true), path.Join(datadir, "snapshots"))
 		defer allSnapshots.Close()
diff --git a/eth/backend.go b/eth/backend.go
index af1c752df..e08016361 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -180,10 +180,8 @@ func New(stack *node.Node, config *ethconfig.Config, logger log.Logger) (*Ethere
 		return nil, genesisErr
 	}
 
-	config.Sync.Mode, err = ethconfig.SyncModeByChainName(chainConfig.ChainName, config.Sync.ModeCli)
-	if err != nil {
-		return nil, err
-	}
+	config.Sync.Mode = ethconfig.SyncModeByChainName(chainConfig.ChainName, config.Sync.ModeCli)
+	log.Info("Syncmode", "type", config.Sync.Mode)
 	config.Snapshot.Enabled = config.Sync.Mode == ethconfig.SnapSync
 
 	types.SetHeaderSealFlag(chainConfig.IsHeaderWithSeal())
diff --git a/eth/ethconfig/config.go b/eth/ethconfig/config.go
index d52e5a56d..0da8b0d37 100644
--- a/eth/ethconfig/config.go
+++ b/eth/ethconfig/config.go
@@ -18,7 +18,6 @@
 package ethconfig
 
 import (
-	"fmt"
 	"math/big"
 	"os"
 	"os/user"
@@ -37,6 +36,7 @@ import (
 	"github.com/ledgerwatch/erigon/ethdb/prune"
 	"github.com/ledgerwatch/erigon/params"
 	"github.com/ledgerwatch/erigon/params/networkname"
+	"github.com/ledgerwatch/log/v3"
 )
 
 // FullNodeGPO contains default gasprice oracle settings for full node.
@@ -246,19 +246,19 @@ const (
 	SnapSync SyncMode = "snap"
 )
 
-func SyncModeByChainName(chain, syncCliFlag string) (SyncMode, error) {
+func SyncModeByChainName(chain, syncCliFlag string) SyncMode {
 	if syncCliFlag == "full" {
-		return FullSync, nil
+		return FullSync
 	} else if syncCliFlag == "snap" {
-		return SnapSync, nil
+		return SnapSync
 	} else if syncCliFlag != "" {
-		return FullSync, fmt.Errorf("unexpected syncmode: %s, only next options are valid: %s, %s", syncCliFlag, FullSync, SnapSync)
+		log.Warn("Unexpected Syncmode", "got", syncCliFlag, "option_1", FullSync, "option_2 ", SnapSync)
 	}
 	switch chain {
 	case networkname.MainnetChainName, networkname.BSCChainName, networkname.GoerliChainName,
 		networkname.RopstenChainName:
-		return SnapSync, nil
+		return SnapSync
 	default:
-		return FullSync, nil
+		return FullSync
 	}
 }
diff --git a/turbo/snapshotsync/snap/flags.go b/turbo/snapshotsync/snap/flags.go
index 4b1ade54e..f05eb8175 100644
--- a/turbo/snapshotsync/snap/flags.go
+++ b/turbo/snapshotsync/snap/flags.go
@@ -15,6 +15,7 @@ func Enabled(tx kv.Getter) (bool, error) {
 	return kv.GetBool(tx, kv.DatabaseInfo, blockSnapshotEnabledKey)
 }
 
+// makes sure that erigon is on the same syncmode used previously
 func EnsureNotChanged(tx kv.GetPut, cfg ethconfig.Snapshot) error {
 	ok, v, err := kv.EnsureNotChangedBool(tx, kv.DatabaseInfo, blockSnapshotEnabledKey, cfg.Enabled)
 	if err != nil {