diff --git a/src/main/java/net/lamgc/oracle/sentry/ComputeInstanceManager.java b/src/main/java/net/lamgc/oracle/sentry/ComputeInstanceManager.java
index 1cf268a..2026bda 100644
--- a/src/main/java/net/lamgc/oracle/sentry/ComputeInstanceManager.java
+++ b/src/main/java/net/lamgc/oracle/sentry/ComputeInstanceManager.java
@@ -86,6 +86,9 @@ public class ComputeInstanceManager {
                     .compartmentId(compartmentId)
                     .build());
             for (Instance instance : listInstances.getItems()) {
+                if (instance.getLifecycleState() == Instance.LifecycleState.Terminated) {
+                    continue;
+                }
                 ComputeInstance computeInstance = new ComputeInstance(this, instance.getId(),
                         provider.getUserId(), compartmentId, instance.getImageId(), provider);