diff --git a/pkg/apis/experimental/v1/defaults.go b/pkg/apis/experimental/v1/defaults.go
index 952b1ecd489..b2cabf54159 100644
--- a/pkg/apis/experimental/v1/defaults.go
+++ b/pkg/apis/experimental/v1/defaults.go
@@ -94,8 +94,7 @@ func addDefaultingFuncs() {
 				obj.Spec.Completions = &completions
 			}
 			if obj.Spec.Parallelism == nil {
-				parallelism := 2
-				obj.Spec.Parallelism = &parallelism
+				obj.Spec.Parallelism = obj.Spec.Completions
 			}
 		},
 	)
diff --git a/pkg/apis/experimental/v1/defaults_test.go b/pkg/apis/experimental/v1/defaults_test.go
index a1979532db7..ffa48b391e2 100644
--- a/pkg/apis/experimental/v1/defaults_test.go
+++ b/pkg/apis/experimental/v1/defaults_test.go
@@ -194,7 +194,7 @@ func TestSetDefaultJob(t *testing.T) {
 		Spec: JobSpec{
 			Selector:    map[string]string{"job": "selector"},
 			Completions: newInt(1),
-			Parallelism: newInt(2),
+			Parallelism: newInt(1),
 		},
 	}
 	tests := []*Job{
@@ -228,7 +228,7 @@ func TestSetDefaultJob(t *testing.T) {
 		// selector from template labels, completions - default, parallelism set explicitly
 		{
 			Spec: JobSpec{
-				Parallelism: newInt(2),
+				Parallelism: newInt(1),
 				Template: &v1.PodTemplateSpec{
 					ObjectMeta: v1.ObjectMeta{
 						Labels: map[string]string{"job": "selector"},