diff --git a/pkg/asset/agent/installconfig.go b/pkg/asset/agent/installconfig.go
index 2bff2e3ed01..893dc47d78c 100644
--- a/pkg/asset/agent/installconfig.go
+++ b/pkg/asset/agent/installconfig.go
@@ -256,14 +256,6 @@ func (a *OptionalInstallConfig) validateTNAConfiguration(installConfig *types.In
 		allErrs = append(allErrs, field.Invalid(fieldPath, installConfig.Arbiter.Replicas,
 			"TNA (Two Node with Arbiter) configuration requires exactly 1 arbiter replica"))
 	}
-	// At this point we know: 2 replicas + arbiter configured
-	// Check if TNA feature gate is enabled
-	if !installConfig.Enabled(features.FeatureGateHighlyAvailableArbiter) {
-		fieldPath := field.NewPath("arbiter")
-		allErrs = append(allErrs, field.Invalid(fieldPath, "configured",
-			"arbiter configuration requires FeatureGateHighlyAvailableArbiter to be enabled"))
-	}
-
 	return allErrs
 }
 
@@ -302,10 +294,7 @@ func (a *OptionalInstallConfig) validateControlPlaneConfiguration(installConfig
 		// Basic boundary check for control plane replicas
 		if *installConfig.ControlPlane.Replicas < 1 || *installConfig.ControlPlane.Replicas > 5 {
 			fieldPath = field.NewPath("controlPlane", "replicas")
-			supportedControlPlaneRange := []string{"3", "1", "4", "5"}
-			if installConfig.Enabled(features.FeatureGateHighlyAvailableArbiter) {
-				supportedControlPlaneRange = append(supportedControlPlaneRange, "2 (with arbiter)")
-			}
+			supportedControlPlaneRange := []string{"3", "1", "4", "5", "2 (with arbiter)"}
 			if installConfig.Enabled(features.FeatureGateDualReplica) {
 				supportedControlPlaneRange = append(supportedControlPlaneRange, "2 (with fencing)")
 			}
diff --git a/pkg/types/validation/installconfig.go b/pkg/types/validation/installconfig.go
index ea947434ee3..d34bda45fee 100644
--- a/pkg/types/validation/installconfig.go
+++ b/pkg/types/validation/installconfig.go
@@ -22,7 +22,6 @@ import (
 	utilsnet "k8s.io/utils/net"
 
 	configv1 "github.com/openshift/api/config/v1"
-	"github.com/openshift/api/features"
 	operv1 "github.com/openshift/api/operator/v1"
 	"github.com/openshift/installer/pkg/hostcrypt"
 	"github.com/openshift/installer/pkg/ipnet"
@@ -150,11 +149,7 @@ func ValidateInstallConfig(c *types.InstallConfig, usingAgentMethod bool) field.
 	}
 
 	if c.Arbiter != nil {
-		if c.Enabled(features.FeatureGateHighlyAvailableArbiter) {
-			allErrs = append(allErrs, validateArbiter(&c.Platform, c.Arbiter, c.ControlPlane, field.NewPath("arbiter"))...)
-		} else {
-			allErrs = append(allErrs, field.Forbidden(field.NewPath("arbiter"), fmt.Sprintf("%s feature must be enabled in order to use arbiter cluster deployment", features.FeatureGateHighlyAvailableArbiter)))
-		}
+		allErrs = append(allErrs, validateArbiter(&c.Platform, c.Arbiter, c.ControlPlane, field.NewPath("arbiter"))...)
 	}
 	allErrs = append(allErrs, validateCompute(&c.Platform, c.ControlPlane, c.Compute, field.NewPath("compute"))...)