diff --git a/controllers/k8score/event_controller_test.go b/controllers/k8score/event_controller_test.go
index 70ceb23bf17..5a4e90c93bd 100644
--- a/controllers/k8score/event_controller_test.go
+++ b/controllers/k8score/event_controller_test.go
@@ -226,7 +226,7 @@ var _ = Describe("Event Controller", func() {
 			By("send role changed event with afterLastTS later than pod last role changes event timestamp annotation should be update successfully")
 			role = "follower"
 			sndValidEvent := createRoleChangedEvent(podName, role, uid)
-			sndValidEvent.EventTime = metav1.NewMicroTime(afterLastTS)
+			sndValidEvent.LastTimestamp = metav1.NewTime(afterLastTS)
 			Expect(testCtx.CreateObj(ctx, sndValidEvent)).Should(Succeed())
 			Eventually(func() string {
 				event := &corev1.Event{}
@@ -242,7 +242,7 @@ var _ = Describe("Event Controller", func() {
 				g.Expect(p).ShouldNot(BeNil())
 				g.Expect(p.Labels).ShouldNot(BeNil())
 				g.Expect(p.Labels[constant.RoleLabelKey]).Should(Equal(role))
-				g.Expect(p.Annotations[constant.LastRoleSnapshotVersionAnnotationKey]).Should(Equal(strconv.FormatInt(sndValidEvent.EventTime.UnixMicro(), 10)))
+				g.Expect(p.Annotations[constant.LastRoleSnapshotVersionAnnotationKey]).Should(Equal(strconv.FormatInt(sndValidEvent.LastTimestamp.UnixMicro(), 10)))
 			})).Should(Succeed())
 		})
 	})
diff --git a/pkg/controller/instanceset/pod_role_event_handler.go b/pkg/controller/instanceset/pod_role_event_handler.go
index 3c3808a2f66..30161ca6179 100644
--- a/pkg/controller/instanceset/pod_role_event_handler.go
+++ b/pkg/controller/instanceset/pod_role_event_handler.go
@@ -195,7 +195,7 @@ func parseGlobalRoleSnapshot(role string, event *corev1.Event) *common.GlobalRol
 	if err := json.Unmarshal([]byte(role), snapshot); err == nil {
 		return snapshot
 	}
-	snapshot.Version = strconv.FormatInt(event.EventTime.UnixMicro(), 10)
+	snapshot.Version = strconv.FormatInt(event.LastTimestamp.UnixMicro(), 10)
 	pair := common.PodRoleNamePair{
 		PodName:  event.InvolvedObject.Name,
 		RoleName: role,