diff --git a/pkg/apis/batch/types.go b/pkg/apis/batch/types.go
index 2113dca18a6..d26ecf8e7a4 100644
--- a/pkg/apis/batch/types.go
+++ b/pkg/apis/batch/types.go
@@ -233,6 +233,7 @@ type CronJobSpec struct {
 	StartingDeadlineSeconds *int64
 
 	// ConcurrencyPolicy specifies how to treat concurrent executions of a Job.
+	// Defaults to Allow.
 	// +optional
 	ConcurrencyPolicy ConcurrencyPolicy
 
diff --git a/pkg/apis/batch/v2alpha1/defaults_test.go b/pkg/apis/batch/v2alpha1/defaults_test.go
index c300a72f146..1dda456d435 100644
--- a/pkg/apis/batch/v2alpha1/defaults_test.go
+++ b/pkg/apis/batch/v2alpha1/defaults_test.go
@@ -41,7 +41,7 @@ func TestSetDefaultCronJob(t *testing.T) {
 				},
 			},
 		},
-		"nothing should be defaulted": {
+		"set fields should not be defaulted": {
 			original: &CronJob{
 				Spec: CronJobSpec{
 					ConcurrencyPolicy: ForbidConcurrent,
diff --git a/pkg/apis/batch/v2alpha1/types.go b/pkg/apis/batch/v2alpha1/types.go
index 3c1fdf22a3b..e22e32f2232 100644
--- a/pkg/apis/batch/v2alpha1/types.go
+++ b/pkg/apis/batch/v2alpha1/types.go
@@ -94,6 +94,7 @@ type CronJobSpec struct {
 	StartingDeadlineSeconds *int64 `json:"startingDeadlineSeconds,omitempty" protobuf:"varint,2,opt,name=startingDeadlineSeconds"`
 
 	// ConcurrencyPolicy specifies how to treat concurrent executions of a Job.
+	// Defaults to Allow.
 	// +optional
 	ConcurrencyPolicy ConcurrencyPolicy `json:"concurrencyPolicy,omitempty" protobuf:"bytes,3,opt,name=concurrencyPolicy,casttype=ConcurrencyPolicy"`