diff --git a/pkg/service/model_build_load_balancer_addons.go b/pkg/service/model_build_load_balancer_addons.go
index b9c4fabb3..a8cc0eba5 100644
--- a/pkg/service/model_build_load_balancer_addons.go
+++ b/pkg/service/model_build_load_balancer_addons.go
@@ -3,19 +3,19 @@ package service
 import (
 	"context"
 
-	"github.com/pkg/errors"
 	"sigs.k8s.io/aws-load-balancer-controller/pkg/annotations"
+	"sigs.k8s.io/aws-load-balancer-controller/pkg/model/core"
 	shieldmodel "sigs.k8s.io/aws-load-balancer-controller/pkg/model/shield"
 )
 
-func (t *defaultModelBuildTask) buildLoadBalancerAddOns(ctx context.Context) error {
-	if _, err := t.buildShieldProtection(ctx); err != nil {
+func (t *defaultModelBuildTask) buildLoadBalancerAddOns(ctx context.Context, lbARN core.StringToken) error {
+	if _, err := t.buildShieldProtection(ctx, lbARN); err != nil {
 		return err
 	}
 	return nil
 }
 
-func (t *defaultModelBuildTask) buildShieldProtection(_ context.Context) (*shieldmodel.Protection, error) {
+func (t *defaultModelBuildTask) buildShieldProtection(_ context.Context, lbARN core.StringToken) (*shieldmodel.Protection, error) {
 	explicitEnableProtections := make(map[bool]struct{})
 	rawEnableProtection := false
 	exists, err := t.annotationParser.ParseBoolAnnotation(annotations.SvcLBSuffixShieldAdvancedProtection, &rawEnableProtection, t.service.Annotations)
@@ -28,14 +28,10 @@ func (t *defaultModelBuildTask) buildShieldProtection(_ context.Context) (*shiel
 	if len(explicitEnableProtections) == 0 {
 		return nil, nil
 	}
-	if len(explicitEnableProtections) > 1 {
-		return nil, errors.New("conflicting enable shield advanced protection")
-	}
-	if _, enableProtection := explicitEnableProtections[true]; enableProtection {
-		protection := shieldmodel.NewProtection(t.stack, resourceIDLoadBalancer, shieldmodel.ProtectionSpec{
-			ResourceARN: t.loadBalancer.LoadBalancerARN(),
-		})
-		return protection, nil
-	}
-	return nil, nil
+	_, enableProtection := explicitEnableProtections[true]
+	protection := shieldmodel.NewProtection(t.stack, resourceIDLoadBalancer, shieldmodel.ProtectionSpec{
+		Enabled:     enableProtection,
+		ResourceARN: lbARN,
+	})
+	return protection, nil
 }
diff --git a/pkg/service/model_build_load_balancer_addons_test.go b/pkg/service/model_build_load_balancer_addons_test.go
new file mode 100644
index 000000000..5b2ea8815
--- /dev/null
+++ b/pkg/service/model_build_load_balancer_addons_test.go
@@ -0,0 +1,114 @@
+package service
+
+import (
+	"context"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/google/go-cmp/cmp/cmpopts"
+	"github.com/stretchr/testify/assert"
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"sigs.k8s.io/aws-load-balancer-controller/pkg/annotations"
+	"sigs.k8s.io/aws-load-balancer-controller/pkg/model/core"
+	shieldmodel "sigs.k8s.io/aws-load-balancer-controller/pkg/model/shield"
+)
+
+func Test_defaultModelBuildTask_buildShieldProtection(t *testing.T) {
+	type args struct {
+		lbARN core.StringToken
+	}
+	tests := []struct {
+		testName  string
+		svc       *corev1.Service
+		args      args
+		want      *shieldmodel.Protection
+		wantError bool
+	}{
+		{
+			testName: "when shield-advanced-protection annotation is not specified",
+			svc: &corev1.Service{
+				ObjectMeta: metav1.ObjectMeta{
+					Annotations: map[string]string{},
+				},
+			},
+			args: args{
+				lbARN: core.LiteralStringToken("awesome-lb-arn"),
+			},
+			want:      nil,
+			wantError: false,
+		},
+		{
+			testName: "when shield-advanced-protection annotation set to true",
+			svc: &corev1.Service{
+				ObjectMeta: metav1.ObjectMeta{
+					Annotations: map[string]string{
+						"service.beta.kubernetes.io/aws-load-balancer-nlb-shield-advanced-protection": "true",
+					},
+				},
+			},
+			args: args{
+				lbARN: core.LiteralStringToken("awesome-lb-arn"),
+			},
+			want: &shieldmodel.Protection{
+				Spec: shieldmodel.ProtectionSpec{
+					Enabled:     true,
+					ResourceARN: core.LiteralStringToken("awesome-lb-arn"),
+				},
+			},
+			wantError: false,
+		},
+		{
+			testName: "when shield-advanced-protection annotation set to false",
+			svc: &corev1.Service{
+				ObjectMeta: metav1.ObjectMeta{
+					Annotations: map[string]string{
+						"service.beta.kubernetes.io/aws-load-balancer-nlb-shield-advanced-protection": "false",
+					},
+				},
+			},
+			args: args{
+				lbARN: core.LiteralStringToken("awesome-lb-arn"),
+			},
+			want: &shieldmodel.Protection{
+				Spec: shieldmodel.ProtectionSpec{
+					Enabled:     false,
+					ResourceARN: core.LiteralStringToken("awesome-lb-arn"),
+				},
+			},
+			wantError: false,
+		},
+		{
+			testName: "when shield-advanced-protection annotation has non boolean value",
+			svc: &corev1.Service{
+				ObjectMeta: metav1.ObjectMeta{
+					Annotations: map[string]string{
+						"service.beta.kubernetes.io/aws-load-balancer-nlb-shield-advanced-protection": "FalSe1",
+					},
+				},
+			},
+			args: args{
+				lbARN: core.LiteralStringToken("awesome-lb-arn"),
+			},
+			wantError: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.testName, func(t *testing.T) {
+			stack := core.NewDefaultStack(core.StackID{Name: "awesome-stack"})
+			annotationParser := annotations.NewSuffixAnnotationParser("service.beta.kubernetes.io")
+			task := &defaultModelBuildTask{
+				service:          tt.svc,
+				annotationParser: annotationParser,
+				stack:            stack,
+			}
+			got, err := task.buildShieldProtection(context.Background(), tt.args.lbARN)
+			if tt.wantError {
+				assert.Error(t, err)
+			} else {
+				opts := cmpopts.IgnoreTypes(core.ResourceMeta{})
+				assert.True(t, cmp.Equal(tt.want, got, opts), "diff", cmp.Diff(tt.want, got, opts))
+			}
+		})
+	}
+}
diff --git a/pkg/service/model_builder.go b/pkg/service/model_builder.go
index 5743886cc..2b16a1ba8 100644
--- a/pkg/service/model_builder.go
+++ b/pkg/service/model_builder.go
@@ -2,10 +2,11 @@ package service
 
 import (
 	"context"
-	ec2types "github.com/aws/aws-sdk-go-v2/service/ec2/types"
 	"strconv"
 	"sync"
 
+	ec2types "github.com/aws/aws-sdk-go-v2/service/ec2/types"
+
 	"github.com/go-logr/logr"
 	"github.com/pkg/errors"
 	corev1 "k8s.io/api/core/v1"
@@ -249,7 +250,7 @@ func (t *defaultModelBuildTask) buildModel(ctx context.Context) error {
 	if err != nil {
 		return err
 	}
-	if err := t.buildLoadBalancerAddOns(ctx); err != nil {
+	if err := t.buildLoadBalancerAddOns(ctx, t.loadBalancer.LoadBalancerARN()); err != nil {
 		return err
 	}
 	return nil