diff --git a/shared/featureconfig/config.go b/shared/featureconfig/config.go
index 09d7ebe1d0..5494060c2b 100644
--- a/shared/featureconfig/config.go
+++ b/shared/featureconfig/config.go
@@ -161,9 +161,10 @@ func ConfigureBeaconChain(ctx *cli.Context) {
 	if ctx.Bool(checkPtInfoCache.Name) {
 		log.Warn("Advance check point info cache is no longer supported and will soon be deleted")
 	}
-	if ctx.Bool(enableBlst.Name) {
-		log.Warn("Enabling new BLS library blst")
-		cfg.EnableBlst = true
+	cfg.EnableBlst = true
+	if ctx.Bool(disableBlst.Name) {
+		log.Warn("Disabling new BLS library blst")
+		cfg.EnableBlst = false
 	}
 	cfg.EnablePruningDepositProofs = true
 	if ctx.Bool(disablePruningDepositProofs.Name) {
diff --git a/shared/featureconfig/deprecated_flags.go b/shared/featureconfig/deprecated_flags.go
index 2ee56f3907..22050ace47 100644
--- a/shared/featureconfig/deprecated_flags.go
+++ b/shared/featureconfig/deprecated_flags.go
@@ -22,10 +22,16 @@ var (
 		Usage:  deprecatedUsage,
 		Hidden: true,
 	}
+	deprecatedEnableBlst = &cli.BoolFlag{
+		Name:   "blst",
+		Usage:  deprecatedUsage,
+		Hidden: true,
+	}
 )
 
 var deprecatedFlags = []cli.Flag{
 	exampleDeprecatedFeatureFlag,
 	deprecatedEnablePruningDepositProofs,
 	deprecatedEnableEth1DataMajorityVote,
+	deprecatedEnableBlst,
 }
diff --git a/shared/featureconfig/flags.go b/shared/featureconfig/flags.go
index 50025c0dc8..82602756a0 100644
--- a/shared/featureconfig/flags.go
+++ b/shared/featureconfig/flags.go
@@ -55,9 +55,9 @@ var (
 		Usage: "Which strategy to use when aggregating attestations, one of: naive, max_cover.",
 		Value: "max_cover",
 	}
-	enableBlst = &cli.BoolFlag{
-		Name:  "blst",
-		Usage: "Enable new BLS library, blst, from Supranational",
+	disableBlst = &cli.BoolFlag{
+		Name:  "disable-blst",
+		Usage: "Disables the new BLS library, blst, from Supranational",
 	}
 	disableEth1DataMajorityVote = &cli.BoolFlag{
 		Name:  "disable-eth1-data-majority-vote",
@@ -99,7 +99,7 @@ var ValidatorFlags = append(deprecatedFlags, []cli.Flag{
 	PyrmontTestnet,
 	Mainnet,
 	disableAccountsV2,
-	enableBlst,
+	disableBlst,
 }...)
 
 // SlasherFlags contains a list of all the feature flags that apply to the slasher client.
@@ -126,7 +126,7 @@ var BeaconChainFlags = append(deprecatedFlags, []cli.Flag{
 	ToledoTestnet,
 	PyrmontTestnet,
 	Mainnet,
-	enableBlst,
+	disableBlst,
 	disableEth1DataMajorityVote,
 	enablePeerScorer,
 	checkPtInfoCache,