diff --git a/pkg/controller/v1alpha2/experiment/experiment_controller_test.go b/pkg/controller/v1alpha2/experiment/experiment_controller_test.go
index 96741667a9b..0abe564f9bb 100644
--- a/pkg/controller/v1alpha2/experiment/experiment_controller_test.go
+++ b/pkg/controller/v1alpha2/experiment/experiment_controller_test.go
@@ -50,6 +50,7 @@ func TestCreateExperiment(t *testing.T) {
 	mc := managerclientmock.NewMockManagerClient(mockCtrl)
 	mc.EXPECT().CreateExperimentInDB(gomock.Any()).Return(nil).AnyTimes()
 	mc.EXPECT().UpdateExperimentStatusInDB(gomock.Any()).Return(nil).AnyTimes()
+	mc.EXPECT().DeleteExperimentInDB(gomock.Any()).Return(nil).AnyTimes()
 
 	mockCtrl2 := gomock.NewController(t)
 	defer mockCtrl2.Finish()
@@ -103,8 +104,10 @@ func TestCreateExperiment(t *testing.T) {
 	}
 	g.Expect(err).NotTo(gomega.HaveOccurred())
 	g.Eventually(requests, timeout).Should(gomega.Receive(gomega.Equal(expectedRequest)))
+	g.Eventually(requests, timeout).Should(gomega.Receive(gomega.Equal(expectedRequest)))
 
 	g.Expect(c.Delete(context.TODO(), instance)).NotTo(gomega.HaveOccurred())
+	g.Eventually(requests, timeout).Should(gomega.Receive(gomega.Equal(expectedRequest)))
 	g.Eventually(func() bool {
 		return errors.IsNotFound(c.Get(context.TODO(),
 			expectedRequest.NamespacedName, instance))
@@ -120,6 +123,7 @@ func TestReconcileExperiment(t *testing.T) {
 	mc := managerclientmock.NewMockManagerClient(mockCtrl)
 	mc.EXPECT().CreateExperimentInDB(gomock.Any()).Return(nil).AnyTimes()
 	mc.EXPECT().UpdateExperimentStatusInDB(gomock.Any()).Return(nil).AnyTimes()
+	mc.EXPECT().DeleteExperimentInDB(gomock.Any()).Return(nil).AnyTimes()
 
 	mockCtrl2 := gomock.NewController(t)
 	defer mockCtrl2.Finish()
@@ -238,6 +242,10 @@ spec:
 		return
 	}
 	g.Expect(err).NotTo(gomega.HaveOccurred())
+	// We have 4 reconcile requests to finish the process.
+	g.Eventually(requests, timeout).Should(gomega.Receive(gomega.Equal(expectedRequest)))
+	g.Eventually(requests, timeout).Should(gomega.Receive(gomega.Equal(expectedRequest)))
+	g.Eventually(requests, timeout).Should(gomega.Receive(gomega.Equal(expectedRequest)))
 	g.Eventually(requests, timeout).Should(gomega.Receive(gomega.Equal(expectedRequest)))
 
 	trials := &trialsv1alpha2.TrialList{}
@@ -253,6 +261,7 @@ spec:
 		Should(gomega.Equal(1))
 
 	g.Expect(c.Delete(context.TODO(), instance)).NotTo(gomega.HaveOccurred())
+	g.Eventually(requests, timeout).Should(gomega.Receive(gomega.Equal(expectedRequest)))
 	g.Eventually(func() bool {
 		return errors.IsNotFound(c.Get(context.TODO(),
 			expectedRequest.NamespacedName, instance))
diff --git a/pkg/controller/v1alpha2/experiment/experiment_util.go b/pkg/controller/v1alpha2/experiment/experiment_util.go
index 3f6d1e5e5d4..820d98208f2 100644
--- a/pkg/controller/v1alpha2/experiment/experiment_util.go
+++ b/pkg/controller/v1alpha2/experiment/experiment_util.go
@@ -84,7 +84,7 @@ func (r *ReconcileExperiment) createTrialInstance(expInstance *experimentsv1alph
 
 func (r *ReconcileExperiment) updateFinalizers(instance *experimentsv1alpha2.Experiment, finalizers []string) (reconcile.Result, error) {
 	logger := log.WithValues("Experiment", types.NamespacedName{Name: instance.Name, Namespace: instance.Namespace})
-	if instance.GetDeletionTimestamp() != nil {
+	if !instance.ObjectMeta.DeletionTimestamp.IsZero() {
 		if err := r.DeleteExperimentInDB(instance); err != nil {
 			logger.Error(err, "Fail to delete data in DB")
 			return reconcile.Result{}, err