diff --git a/controllers/configuration_controller.go b/controllers/configuration_controller.go
index 5265ea62..64eec5dd 100644
--- a/controllers/configuration_controller.go
+++ b/controllers/configuration_controller.go
@@ -301,7 +301,6 @@ func assembleTerraformJob(name, jobName string, configuration *v1beta1.Configura
 	envs []v1.EnvVar, executionType TerraformExecutionType) *batchv1.Job {
 	var parallelism int32 = 1
 	var completions int32 = 1
-	var ttlSecondsAfterFinished int32 = 0
 
 	initContainerVolumeMounts := []v1.VolumeMount{
 		{
@@ -334,8 +333,6 @@ func assembleTerraformJob(name, jobName string, configuration *v1beta1.Configura
 			}},
 		},
 		Spec: batchv1.JobSpec{
-			// TODO(zzxwill) Not enabled in Kubernetes cluster lower than v1.21
-			TTLSecondsAfterFinished: &ttlSecondsAfterFinished,
 			Parallelism:             &parallelism,
 			Completions:             &completions,
 			Template: v1.PodTemplateSpec{