diff --git a/api/v1alpha1/validation/envoyproxy_validate_test.go b/api/v1alpha1/validation/envoyproxy_validate_test.go
index bd0ee5d189d..ed3c75c12c1 100644
--- a/api/v1alpha1/validation/envoyproxy_validate_test.go
+++ b/api/v1alpha1/validation/envoyproxy_validate_test.go
@@ -451,7 +451,7 @@ func TestValidateEnvoyProxy(t *testing.T) {
 			expected: true,
 		},
 		{
-			name: "should be invalid when hpa patch type is empty",
+			name: "should be valid when pdb patch type and patch are empty",
 			proxy: &egv1a1.EnvoyProxy{
 				ObjectMeta: metav1.ObjectMeta{
 					Namespace: "test",
@@ -461,7 +461,7 @@ func TestValidateEnvoyProxy(t *testing.T) {
 					Provider: &egv1a1.EnvoyProxyProvider{
 						Type: egv1a1.ProviderTypeKubernetes,
 						Kubernetes: &egv1a1.EnvoyProxyKubernetesProvider{
-							EnvoyHpa: &egv1a1.KubernetesHorizontalPodAutoscalerSpec{
+							EnvoyPDB: &egv1a1.KubernetesPodDisruptionBudgetSpec{
 								Patch: &egv1a1.KubernetesPatchSpec{
 									Value: apiextensionsv1.JSON{
 										Raw: []byte{},
@@ -475,7 +475,54 @@ func TestValidateEnvoyProxy(t *testing.T) {
 			expected: true,
 		},
 		{
-			name: "should be invalid when pdb patch type is empty",
+			name: "should be valid when pdb patch and type are set",
+			proxy: &egv1a1.EnvoyProxy{
+				ObjectMeta: metav1.ObjectMeta{
+					Namespace: "test",
+					Name:      "test",
+				},
+				Spec: egv1a1.EnvoyProxySpec{
+					Provider: &egv1a1.EnvoyProxyProvider{
+						Type: egv1a1.ProviderTypeKubernetes,
+						Kubernetes: &egv1a1.EnvoyProxyKubernetesProvider{
+							EnvoyPDB: &egv1a1.KubernetesPodDisruptionBudgetSpec{
+								Patch: &egv1a1.KubernetesPatchSpec{
+									Type: ptr.To(egv1a1.StrategicMerge),
+									Value: apiextensionsv1.JSON{
+										Raw: []byte("{}"),
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+			expected: true,
+		},
+		{
+			name: "should be invalid when pdb patch not set",
+			proxy: &egv1a1.EnvoyProxy{
+				ObjectMeta: metav1.ObjectMeta{
+					Namespace: "test",
+					Name:      "test",
+				},
+				Spec: egv1a1.EnvoyProxySpec{
+					Provider: &egv1a1.EnvoyProxyProvider{
+						Type: egv1a1.ProviderTypeKubernetes,
+						Kubernetes: &egv1a1.EnvoyProxyKubernetesProvider{
+							EnvoyPDB: &egv1a1.KubernetesPodDisruptionBudgetSpec{
+								Patch: &egv1a1.KubernetesPatchSpec{
+									Type: ptr.To(egv1a1.StrategicMerge),
+								},
+							},
+						},
+					},
+				},
+			},
+			expected: false,
+		},
+		{
+			name: "should be invalid when pdb type not set",
 			proxy: &egv1a1.EnvoyProxy{
 				ObjectMeta: metav1.ObjectMeta{
 					Namespace: "test",
@@ -486,6 +533,28 @@ func TestValidateEnvoyProxy(t *testing.T) {
 						Type: egv1a1.ProviderTypeKubernetes,
 						Kubernetes: &egv1a1.EnvoyProxyKubernetesProvider{
 							EnvoyPDB: &egv1a1.KubernetesPodDisruptionBudgetSpec{
+								Patch: &egv1a1.KubernetesPatchSpec{
+									Type: ptr.To(egv1a1.StrategicMerge),
+								},
+							},
+						},
+					},
+				},
+			},
+			expected: false,
+		},
+		{
+			name: "should be valid when hpa patch and type are empty",
+			proxy: &egv1a1.EnvoyProxy{
+				ObjectMeta: metav1.ObjectMeta{
+					Namespace: "test",
+					Name:      "test",
+				},
+				Spec: egv1a1.EnvoyProxySpec{
+					Provider: &egv1a1.EnvoyProxyProvider{
+						Type: egv1a1.ProviderTypeKubernetes,
+						Kubernetes: &egv1a1.EnvoyProxyKubernetesProvider{
+							EnvoyHpa: &egv1a1.KubernetesHorizontalPodAutoscalerSpec{
 								Patch: &egv1a1.KubernetesPatchSpec{
 									Value: apiextensionsv1.JSON{
 										Raw: []byte{},
@@ -498,6 +567,74 @@ func TestValidateEnvoyProxy(t *testing.T) {
 			},
 			expected: true,
 		},
+		{
+			name: "should be valid when hpa patch and type are set",
+			proxy: &egv1a1.EnvoyProxy{
+				ObjectMeta: metav1.ObjectMeta{
+					Namespace: "test",
+					Name:      "test",
+				},
+				Spec: egv1a1.EnvoyProxySpec{
+					Provider: &egv1a1.EnvoyProxyProvider{
+						Type: egv1a1.ProviderTypeKubernetes,
+						Kubernetes: &egv1a1.EnvoyProxyKubernetesProvider{
+							EnvoyHpa: &egv1a1.KubernetesHorizontalPodAutoscalerSpec{
+								Patch: &egv1a1.KubernetesPatchSpec{
+									Type: ptr.To(egv1a1.StrategicMerge),
+									Value: apiextensionsv1.JSON{
+										Raw: []byte("{}"),
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+			expected: true,
+		},
+		{
+			name: "should be invalid when hpa patch not set",
+			proxy: &egv1a1.EnvoyProxy{
+				ObjectMeta: metav1.ObjectMeta{
+					Namespace: "test",
+					Name:      "test",
+				},
+				Spec: egv1a1.EnvoyProxySpec{
+					Provider: &egv1a1.EnvoyProxyProvider{
+						Type: egv1a1.ProviderTypeKubernetes,
+						Kubernetes: &egv1a1.EnvoyProxyKubernetesProvider{
+							EnvoyHpa: &egv1a1.KubernetesHorizontalPodAutoscalerSpec{
+								Patch: &egv1a1.KubernetesPatchSpec{
+									Type: ptr.To(egv1a1.StrategicMerge)},
+							},
+						},
+					},
+				},
+			},
+			expected: false,
+		},
+		{
+			name: "should be invalid when hpa type not set",
+			proxy: &egv1a1.EnvoyProxy{
+				ObjectMeta: metav1.ObjectMeta{
+					Namespace: "test",
+					Name:      "test",
+				},
+				Spec: egv1a1.EnvoyProxySpec{
+					Provider: &egv1a1.EnvoyProxyProvider{
+						Type: egv1a1.ProviderTypeKubernetes,
+						Kubernetes: &egv1a1.EnvoyProxyKubernetesProvider{
+							EnvoyHpa: &egv1a1.KubernetesHorizontalPodAutoscalerSpec{
+								Patch: &egv1a1.KubernetesPatchSpec{
+									Type: ptr.To(egv1a1.StrategicMerge),
+								},
+							},
+						},
+					},
+				},
+			},
+			expected: false,
+		},
 		{
 			name: "should invalid when patch object is empty",
 			proxy: &egv1a1.EnvoyProxy{