diff --git a/api/openapi-spec/swagger.json b/api/openapi-spec/swagger.json
index 66c8520117f..b14dc823f2e 100644
--- a/api/openapi-spec/swagger.json
+++ b/api/openapi-spec/swagger.json
@@ -70574,7 +70574,7 @@
       "format": "byte"
      },
      "service": {
-      "description": "`service` is a reference to the service for this webhook. Either `service` or `url` must be specified.\n\nIf the webhook is running within the cluster, then you should use `service`.\n\nIf there is only one port open for the service, that port will be used. If there are multiple ports open, port 443 will be used if it is open, otherwise it is an error.",
+      "description": "`service` is a reference to the service for this webhook. Either `service` or `url` must be specified.\n\nIf the webhook is running within the cluster, then you should use `service`.\n\nPort 443 will be used if it is open, otherwise it is an error.",
       "$ref": "#/definitions/io.k8s.api.admissionregistration.v1beta1.ServiceReference"
      },
      "url": {
diff --git a/api/swagger-spec/admissionregistration.k8s.io_v1beta1.json b/api/swagger-spec/admissionregistration.k8s.io_v1beta1.json
index a691aa36e64..2f22143dc65 100644
--- a/api/swagger-spec/admissionregistration.k8s.io_v1beta1.json
+++ b/api/swagger-spec/admissionregistration.k8s.io_v1beta1.json
@@ -1777,7 +1777,7 @@
      },
      "service": {
       "$ref": "v1beta1.ServiceReference",
-      "description": "`service` is a reference to the service for this webhook. Either `service` or `url` must be specified.\n\nIf the webhook is running within the cluster, then you should use `service`.\n\nIf there is only one port open for the service, that port will be used. If there are multiple ports open, port 443 will be used if it is open, otherwise it is an error."
+      "description": "`service` is a reference to the service for this webhook. Either `service` or `url` must be specified.\n\nIf the webhook is running within the cluster, then you should use `service`.\n\nPort 443 will be used if it is open, otherwise it is an error."
      },
      "caBundle": {
       "type": "string",
diff --git a/docs/api-reference/admissionregistration.k8s.io/v1beta1/definitions.html b/docs/api-reference/admissionregistration.k8s.io/v1beta1/definitions.html
index 1a9b9a4a361..b080f0a26a1 100755
--- a/docs/api-reference/admissionregistration.k8s.io/v1beta1/definitions.html
+++ b/docs/api-reference/admissionregistration.k8s.io/v1beta1/definitions.html
@@ -1598,7 +1598,7 @@ Attempting to use a user or basic auth e.g. "user:password@" is not allowed. Fra
 <br>
 If the webhook is running within the cluster, then you should use <code>service</code>.<br>
 <br>
-If there is only one port open for the service, that port will be used. If there are multiple ports open, port 443 will be used if it is open, otherwise it is an error.</p></td>
+Port 443 will be used if it is open, otherwise it is an error.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">true</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><a href="#_v1beta1_servicereference">v1beta1.ServiceReference</a></p></td>
 <td class="tableblock halign-left valign-top"></td>
diff --git a/staging/src/k8s.io/api/admissionregistration/v1beta1/generated.proto b/staging/src/k8s.io/api/admissionregistration/v1beta1/generated.proto
index 129dc0ad716..118be06f836 100644
--- a/staging/src/k8s.io/api/admissionregistration/v1beta1/generated.proto
+++ b/staging/src/k8s.io/api/admissionregistration/v1beta1/generated.proto
@@ -250,9 +250,7 @@ message WebhookClientConfig {
   // 
   // If the webhook is running within the cluster, then you should use `service`.
   // 
-  // If there is only one port open for the service, that port will be
-  // used. If there are multiple ports open, port 443 will be used if it
-  // is open, otherwise it is an error.
+  // Port 443 will be used if it is open, otherwise it is an error.
   // 
   // +optional
   optional ServiceReference service = 1;
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 011a5c4b3e7..e90bdc91171 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
@@ -114,7 +114,7 @@ func (Webhook) SwaggerDoc() map[string]string {
 var map_WebhookClientConfig = map[string]string{
 	"":         "WebhookClientConfig contains the information to make a TLS connection with the webhook",
 	"url":      "`url` gives the location of the webhook, in standard URL form (`[scheme://]host:port/path`). Exactly one of `url` or `service` must be specified.\n\nThe `host` should not refer to a service running in the cluster; use the `service` field instead. The host might be resolved via external DNS in some apiservers (e.g., `kube-apiserver` cannot resolve in-cluster DNS as that would be a layering violation). `host` may also be an IP address.\n\nPlease note that using `localhost` or `127.0.0.1` as a `host` is risky unless you take great care to run this webhook on all hosts which run an apiserver which might need to make calls to this webhook. Such installs are likely to be non-portable, i.e., not easy to turn up in a new cluster.\n\nThe scheme must be \"https\"; the URL must begin with \"https://\".\n\nA path is optional, and if present may be any string permissible in a URL. You may use the path to pass an arbitrary string to the webhook, for example, a cluster identifier.\n\nAttempting to use a user or basic auth e.g. \"user:password@\" is not allowed. Fragments (\"#...\") and query parameters (\"?...\") are not allowed, either.",
-	"service":  "`service` is a reference to the service for this webhook. Either `service` or `url` must be specified.\n\nIf the webhook is running within the cluster, then you should use `service`.\n\nIf there is only one port open for the service, that port will be used. If there are multiple ports open, port 443 will be used if it is open, otherwise it is an error.",
+	"service":  "`service` is a reference to the service for this webhook. Either `service` or `url` must be specified.\n\nIf the webhook is running within the cluster, then you should use `service`.\n\nPort 443 will be used if it is open, otherwise it is an error.",
 	"caBundle": "`caBundle` is a PEM encoded CA bundle which will be used to validate the webhook's server certificate. Required.",
 }