diff --git a/api/openapi-spec/swagger.json b/api/openapi-spec/swagger.json
index e96d7124192..ec0639d0f8c 100644
--- a/api/openapi-spec/swagger.json
+++ b/api/openapi-spec/swagger.json
@@ -123,7 +123,7 @@
           "type": "string"
         },
         "port": {
-          "description": "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `Port` should be a valid port number (1-65535, inclusive).",
+          "description": "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `port` should be a valid port number (1-65535, inclusive).",
           "format": "int32",
           "type": "integer"
         }
@@ -2923,7 +2923,7 @@
           "type": "string"
         },
         "port": {
-          "description": "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `Port` should be a valid port number (1-65535, inclusive).",
+          "description": "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `port` should be a valid port number (1-65535, inclusive).",
           "format": "int32",
           "type": "integer"
         }
@@ -16777,7 +16777,7 @@
           "type": "string"
         },
         "port": {
-          "description": "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `Port` should be a valid port number (1-65535, inclusive).",
+          "description": "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `port` should be a valid port number (1-65535, inclusive).",
           "format": "int32",
           "type": "integer"
         }
@@ -18144,7 +18144,7 @@
           "type": "string"
         },
         "port": {
-          "description": "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `Port` should be a valid port number (1-65535, inclusive).",
+          "description": "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `port` should be a valid port number (1-65535, inclusive).",
           "format": "int32",
           "type": "integer"
         }
@@ -18315,7 +18315,7 @@
           "type": "string"
         },
         "port": {
-          "description": "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `Port` should be a valid port number (1-65535, inclusive).",
+          "description": "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `port` should be a valid port number (1-65535, inclusive).",
           "format": "int32",
           "type": "integer"
         }
diff --git a/pkg/apis/admissionregistration/types.go b/pkg/apis/admissionregistration/types.go
index e0c026586d8..d642110a44d 100644
--- a/pkg/apis/admissionregistration/types.go
+++ b/pkg/apis/admissionregistration/types.go
@@ -335,7 +335,7 @@ type ServiceReference struct {
 	Path *string
 
 	// If specified, the port on the service that hosting webhook.
-	// `Port` should be a valid port number (1-65535, inclusive).
+	// `port` should be a valid port number (1-65535, inclusive).
 	// +optional
 	Port int32
 }
diff --git a/pkg/apis/auditregistration/types.go b/pkg/apis/auditregistration/types.go
index bee192e4161..771ad758689 100644
--- a/pkg/apis/auditregistration/types.go
+++ b/pkg/apis/auditregistration/types.go
@@ -193,7 +193,7 @@ type ServiceReference struct {
 	Path *string
 
 	// If specified, the port on the service that hosting webhook.
-	// `Port` should be a valid port number (1-65535, inclusive).
+	// `port` should be a valid port number (1-65535, inclusive).
 	// +optional
 	Port int32
 }
diff --git a/staging/src/k8s.io/api/admissionregistration/v1beta1/generated.proto b/staging/src/k8s.io/api/admissionregistration/v1beta1/generated.proto
index be44f2a5c9d..dac2a82531c 100644
--- a/staging/src/k8s.io/api/admissionregistration/v1beta1/generated.proto
+++ b/staging/src/k8s.io/api/admissionregistration/v1beta1/generated.proto
@@ -126,7 +126,7 @@ message ServiceReference {
 
   // If specified, the port on the service that hosting webhook.
   // Default to 443 for backward compatibility.
-  // `Port` should be a valid port number (1-65535, inclusive).
+  // `port` should be a valid port number (1-65535, inclusive).
   // +optional
   optional int32 port = 4;
 }
diff --git a/staging/src/k8s.io/api/admissionregistration/v1beta1/types.go b/staging/src/k8s.io/api/admissionregistration/v1beta1/types.go
index 21c5b72f1f3..7680659a085 100644
--- a/staging/src/k8s.io/api/admissionregistration/v1beta1/types.go
+++ b/staging/src/k8s.io/api/admissionregistration/v1beta1/types.go
@@ -347,7 +347,7 @@ type ServiceReference struct {
 
 	// If specified, the port on the service that hosting webhook.
 	// Default to 443 for backward compatibility.
-	// `Port` should be a valid port number (1-65535, inclusive).
+	// `port` should be a valid port number (1-65535, inclusive).
 	// +optional
 	Port *int32 `json:"port,omitempty" protobuf:"varint,4,opt,name=port"`
 }
diff --git a/staging/src/k8s.io/api/admissionregistration/v1beta1/types_swagger_doc_generated.go b/staging/src/k8s.io/api/admissionregistration/v1beta1/types_swagger_doc_generated.go
index 11906220cf1..0feb156bcc0 100644
--- a/staging/src/k8s.io/api/admissionregistration/v1beta1/types_swagger_doc_generated.go
+++ b/staging/src/k8s.io/api/admissionregistration/v1beta1/types_swagger_doc_generated.go
@@ -73,7 +73,7 @@ var map_ServiceReference = map[string]string{
 	"namespace": "`namespace` is the namespace of the service. Required",
 	"name":      "`name` is the name of the service. Required",
 	"path":      "`path` is an optional URL path which will be sent in any request to this service.",
-	"port":      "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `Port` should be a valid port number (1-65535, inclusive).",
+	"port":      "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `port` should be a valid port number (1-65535, inclusive).",
 }
 
 func (ServiceReference) SwaggerDoc() map[string]string {
diff --git a/staging/src/k8s.io/api/auditregistration/v1alpha1/generated.proto b/staging/src/k8s.io/api/auditregistration/v1alpha1/generated.proto
index 51477ef4a36..674debee4f2 100644
--- a/staging/src/k8s.io/api/auditregistration/v1alpha1/generated.proto
+++ b/staging/src/k8s.io/api/auditregistration/v1alpha1/generated.proto
@@ -86,7 +86,7 @@ message ServiceReference {
 
   // If specified, the port on the service that hosting webhook.
   // Default to 443 for backward compatibility.
-  // `Port` should be a valid port number (1-65535, inclusive).
+  // `port` should be a valid port number (1-65535, inclusive).
   // +optional
   optional int32 port = 4;
 }
diff --git a/staging/src/k8s.io/api/auditregistration/v1alpha1/types.go b/staging/src/k8s.io/api/auditregistration/v1alpha1/types.go
index 55abb93d8bb..a0fb48c301b 100644
--- a/staging/src/k8s.io/api/auditregistration/v1alpha1/types.go
+++ b/staging/src/k8s.io/api/auditregistration/v1alpha1/types.go
@@ -192,7 +192,7 @@ type ServiceReference struct {
 
 	// If specified, the port on the service that hosting webhook.
 	// Default to 443 for backward compatibility.
-	// `Port` should be a valid port number (1-65535, inclusive).
+	// `port` should be a valid port number (1-65535, inclusive).
 	// +optional
 	Port *int32 `json:"port,omitempty" protobuf:"varint,4,opt,name=port"`
 }
diff --git a/staging/src/k8s.io/api/auditregistration/v1alpha1/types_swagger_doc_generated.go b/staging/src/k8s.io/api/auditregistration/v1alpha1/types_swagger_doc_generated.go
index 0cacf923435..1a86f4da5a7 100644
--- a/staging/src/k8s.io/api/auditregistration/v1alpha1/types_swagger_doc_generated.go
+++ b/staging/src/k8s.io/api/auditregistration/v1alpha1/types_swagger_doc_generated.go
@@ -70,7 +70,7 @@ var map_ServiceReference = map[string]string{
 	"namespace": "`namespace` is the namespace of the service. Required",
 	"name":      "`name` is the name of the service. Required",
 	"path":      "`path` is an optional URL path which will be sent in any request to this service.",
-	"port":      "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `Port` should be a valid port number (1-65535, inclusive).",
+	"port":      "If specified, the port on the service that hosting webhook. Default to 443 for backward compatibility. `port` should be a valid port number (1-65535, inclusive).",
 }
 
 func (ServiceReference) SwaggerDoc() map[string]string {
diff --git a/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/types.go b/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/types.go
index c10d7c5faca..3af24046bf2 100644
--- a/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/types.go
+++ b/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/types.go
@@ -156,7 +156,7 @@ type ServiceReference struct {
 	Path *string
 
 	// If specified, the port on the service that hosting webhook.
-	// `Port` should be a valid port number (1-65535, inclusive).
+	// `port` should be a valid port number (1-65535, inclusive).
 	// +optional
 	Port int32
 }
diff --git a/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1/generated.proto b/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1/generated.proto
index 3e079ed205d..ce7dd730a21 100644
--- a/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1/generated.proto
+++ b/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1/generated.proto
@@ -485,7 +485,7 @@ message ServiceReference {
 
   // If specified, the port on the service that hosting webhook.
   // Default to 443 for backward compatibility.
-  // `Port` should be a valid port number (1-65535, inclusive).
+  // `port` should be a valid port number (1-65535, inclusive).
   // +optional
   optional int32 port = 4;
 }
diff --git a/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1/types.go b/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1/types.go
index fadafce8de4..ad2e1347ce1 100644
--- a/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1/types.go
+++ b/staging/src/k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1/types.go
@@ -165,7 +165,7 @@ type ServiceReference struct {
 
 	// If specified, the port on the service that hosting webhook.
 	// Default to 443 for backward compatibility.
-	// `Port` should be a valid port number (1-65535, inclusive).
+	// `port` should be a valid port number (1-65535, inclusive).
 	// +optional
 	Port *int32 `json:"port,omitempty" protobuf:"varint,4,opt,name=port"`
 }
diff --git a/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/types.go b/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/types.go
index 044b49e7801..76581596d52 100644
--- a/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/types.go
+++ b/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/types.go
@@ -36,7 +36,7 @@ type ServiceReference struct {
 	Name string
 	// If specified, the port on the service that hosting the service.
 	// Default to 443 for backward compatibility.
-	// `Port` should be a valid port number (1-65535, inclusive).
+	// `port` should be a valid port number (1-65535, inclusive).
 	// +optional
 	Port int32
 }
diff --git a/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1/generated.proto b/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1/generated.proto
index 08c6daa8d80..6dd1f270581 100644
--- a/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1/generated.proto
+++ b/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1/generated.proto
@@ -133,7 +133,7 @@ message ServiceReference {
 
   // If specified, the port on the service that hosting webhook.
   // Default to 443 for backward compatibility.
-  // `Port` should be a valid port number (1-65535, inclusive).
+  // `port` should be a valid port number (1-65535, inclusive).
   // +optional
   optional int32 port = 3;
 }
diff --git a/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1/types.go b/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1/types.go
index 58e0296f464..f445410ffbd 100644
--- a/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1/types.go
+++ b/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1/types.go
@@ -36,7 +36,7 @@ type ServiceReference struct {
 	Name string `json:"name,omitempty" protobuf:"bytes,2,opt,name=name"`
 	// If specified, the port on the service that hosting webhook.
 	// Default to 443 for backward compatibility.
-	// `Port` should be a valid port number (1-65535, inclusive).
+	// `port` should be a valid port number (1-65535, inclusive).
 	// +optional
 	Port *int32 `json:"port,omitempty" protobuf:"varint,3,opt,name=port"`
 }
diff --git a/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1beta1/generated.proto b/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1beta1/generated.proto
index f3d60c1f4d3..a8e329f8187 100644
--- a/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1beta1/generated.proto
+++ b/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1beta1/generated.proto
@@ -133,7 +133,7 @@ message ServiceReference {
 
   // If specified, the port on the service that hosting webhook.
   // Default to 443 for backward compatibility.
-  // `Port` should be a valid port number (1-65535, inclusive).
+  // `port` should be a valid port number (1-65535, inclusive).
   // +optional
   optional int32 port = 3;
 }
diff --git a/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1beta1/types.go b/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1beta1/types.go
index 1964ab5fa25..91ce0a1dc8d 100644
--- a/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1beta1/types.go
+++ b/staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1beta1/types.go
@@ -36,7 +36,7 @@ type ServiceReference struct {
 	Name string `json:"name,omitempty" protobuf:"bytes,2,opt,name=name"`
 	// If specified, the port on the service that hosting webhook.
 	// Default to 443 for backward compatibility.
-	// `Port` should be a valid port number (1-65535, inclusive).
+	// `port` should be a valid port number (1-65535, inclusive).
 	// +optional
 	Port *int32 `json:"port,omitempty" protobuf:"varint,3,opt,name=port"`
 }