diff --git a/api/openapi-spec/swagger.json b/api/openapi-spec/swagger.json
index 245fe7501a2..827b5a583b1 100644
--- a/api/openapi-spec/swagger.json
+++ b/api/openapi-spec/swagger.json
@@ -78042,7 +78042,7 @@
       }
      },
      "defaultAddCapabilities": {
-      "description": "DefaultAddCapabilities is the default set of capabilities that will be added to the container unless the pod spec specifically drops the capability.  You may not list a capabiility in both DefaultAddCapabilities and RequiredDropCapabilities.",
+      "description": "DefaultAddCapabilities is the default set of capabilities that will be added to the container unless the pod spec specifically drops the capability.  You may not list a capability in both DefaultAddCapabilities and RequiredDropCapabilities. Capabilities added here are implicitly allowed, and need not be included in the AllowedCapabilities list.",
       "type": "array",
       "items": {
        "type": "string"
diff --git a/api/swagger-spec/extensions_v1beta1.json b/api/swagger-spec/extensions_v1beta1.json
index 66177ee660f..e941401a421 100644
--- a/api/swagger-spec/extensions_v1beta1.json
+++ b/api/swagger-spec/extensions_v1beta1.json
@@ -10169,7 +10169,7 @@
       "items": {
        "$ref": "v1.Capability"
       },
-      "description": "DefaultAddCapabilities is the default set of capabilities that will be added to the container unless the pod spec specifically drops the capability.  You may not list a capabiility in both DefaultAddCapabilities and RequiredDropCapabilities."
+      "description": "DefaultAddCapabilities is the default set of capabilities that will be added to the container unless the pod spec specifically drops the capability.  You may not list a capability in both DefaultAddCapabilities and RequiredDropCapabilities. Capabilities added here are implicitly allowed, and need not be included in the AllowedCapabilities list."
      },
      "requiredDropCapabilities": {
       "type": "array",
diff --git a/docs/api-reference/extensions/v1beta1/definitions.html b/docs/api-reference/extensions/v1beta1/definitions.html
index c2d1fde1117..2d590325677 100755
--- a/docs/api-reference/extensions/v1beta1/definitions.html
+++ b/docs/api-reference/extensions/v1beta1/definitions.html
@@ -7718,7 +7718,7 @@ Both these may change in the future. Incoming requests are matched against the h
 </tr>
 <tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock">defaultAddCapabilities</p></td>
-<td class="tableblock halign-left valign-top"><p class="tableblock">DefaultAddCapabilities is the default set of capabilities that will be added to the container unless the pod spec specifically drops the capability.  You may not list a capabiility in both DefaultAddCapabilities and RequiredDropCapabilities.</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">DefaultAddCapabilities is the default set of capabilities that will be added to the container unless the pod spec specifically drops the capability.  You may not list a capability in both DefaultAddCapabilities and RequiredDropCapabilities. Capabilities added here are implicitly allowed, and need not be included in the AllowedCapabilities list.</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">false</p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><a href="#_v1_capability">v1.Capability</a> array</p></td>
 <td class="tableblock halign-left valign-top"></td>
diff --git a/pkg/apis/extensions/types.go b/pkg/apis/extensions/types.go
index 5e3f43688c5..302818aa405 100644
--- a/pkg/apis/extensions/types.go
+++ b/pkg/apis/extensions/types.go
@@ -804,7 +804,8 @@ type PodSecurityPolicySpec struct {
 	Privileged bool
 	// DefaultAddCapabilities is the default set of capabilities that will be added to the container
 	// unless the pod spec specifically drops the capability.  You may not list a capability in both
-	// DefaultAddCapabilities and RequiredDropCapabilities.
+	// DefaultAddCapabilities and RequiredDropCapabilities. Capabilities added here are implicitly
+	// allowed, and need not be included in the AllowedCapabilities list.
 	// +optional
 	DefaultAddCapabilities []api.Capability
 	// RequiredDropCapabilities are the capabilities that will be dropped from the container.  These
diff --git a/staging/src/k8s.io/api/extensions/v1beta1/generated.proto b/staging/src/k8s.io/api/extensions/v1beta1/generated.proto
index c5414616aed..f6898bce640 100644
--- a/staging/src/k8s.io/api/extensions/v1beta1/generated.proto
+++ b/staging/src/k8s.io/api/extensions/v1beta1/generated.proto
@@ -772,8 +772,9 @@ message PodSecurityPolicySpec {
   optional bool privileged = 1;
 
   // DefaultAddCapabilities is the default set of capabilities that will be added to the container
-  // unless the pod spec specifically drops the capability.  You may not list a capabiility in both
-  // DefaultAddCapabilities and RequiredDropCapabilities.
+  // unless the pod spec specifically drops the capability.  You may not list a capability in both
+  // DefaultAddCapabilities and RequiredDropCapabilities. Capabilities added here are implicitly
+  // allowed, and need not be included in the AllowedCapabilities list.
   // +optional
   repeated string defaultAddCapabilities = 2;
 
diff --git a/staging/src/k8s.io/api/extensions/v1beta1/types.go b/staging/src/k8s.io/api/extensions/v1beta1/types.go
index 6e666b205bc..d4ca1832ca5 100644
--- a/staging/src/k8s.io/api/extensions/v1beta1/types.go
+++ b/staging/src/k8s.io/api/extensions/v1beta1/types.go
@@ -882,8 +882,9 @@ type PodSecurityPolicySpec struct {
 	// +optional
 	Privileged bool `json:"privileged,omitempty" protobuf:"varint,1,opt,name=privileged"`
 	// DefaultAddCapabilities is the default set of capabilities that will be added to the container
-	// unless the pod spec specifically drops the capability.  You may not list a capabiility in both
-	// DefaultAddCapabilities and RequiredDropCapabilities.
+	// unless the pod spec specifically drops the capability.  You may not list a capability in both
+	// DefaultAddCapabilities and RequiredDropCapabilities. Capabilities added here are implicitly
+	// allowed, and need not be included in the AllowedCapabilities list.
 	// +optional
 	DefaultAddCapabilities []v1.Capability `json:"defaultAddCapabilities,omitempty" protobuf:"bytes,2,rep,name=defaultAddCapabilities,casttype=k8s.io/api/core/v1.Capability"`
 	// RequiredDropCapabilities are the capabilities that will be dropped from the container.  These
diff --git a/staging/src/k8s.io/api/extensions/v1beta1/types_swagger_doc_generated.go b/staging/src/k8s.io/api/extensions/v1beta1/types_swagger_doc_generated.go
index 20f529d8719..b98d1179522 100644
--- a/staging/src/k8s.io/api/extensions/v1beta1/types_swagger_doc_generated.go
+++ b/staging/src/k8s.io/api/extensions/v1beta1/types_swagger_doc_generated.go
@@ -449,7 +449,7 @@ func (PodSecurityPolicyList) SwaggerDoc() map[string]string {
 var map_PodSecurityPolicySpec = map[string]string{
 	"":                                "Pod Security Policy Spec defines the policy enforced.",
 	"privileged":                      "privileged determines if a pod can request to be run as privileged.",
-	"defaultAddCapabilities":          "DefaultAddCapabilities is the default set of capabilities that will be added to the container unless the pod spec specifically drops the capability.  You may not list a capabiility in both DefaultAddCapabilities and RequiredDropCapabilities.",
+	"defaultAddCapabilities":          "DefaultAddCapabilities is the default set of capabilities that will be added to the container unless the pod spec specifically drops the capability.  You may not list a capability in both DefaultAddCapabilities and RequiredDropCapabilities. Capabilities added here are implicitly allowed, and need not be included in the AllowedCapabilities list.",
 	"requiredDropCapabilities":        "RequiredDropCapabilities are the capabilities that will be dropped from the container.  These are required to be dropped and cannot be added.",
 	"allowedCapabilities":             "AllowedCapabilities is a list of capabilities that can be requested to add to the container. Capabilities in this field may be added at the pod author's discretion. You must not list a capability in both AllowedCapabilities and RequiredDropCapabilities.",
 	"volumes":                         "volumes is a white list of allowed volume plugins.  Empty indicates that all plugins may be used.",