diff --git a/module/instance_watcher.py b/module/instance_watcher.py
index 9636c7a5e..79227eb3d 100644
--- a/module/instance_watcher.py
+++ b/module/instance_watcher.py
@@ -45,7 +45,11 @@ class InstanceWatcher:
 
     def check_instances(self):
         ins_has_triggered = []
+        ins_inexists = []
         for name, setting in self.instances.items():
+            if not has_config_mod(name):
+                ins_inexists.append(name)
+                continue
             ins = ProcessManager.get_manager(name)
             if not ins.alive:
                 if ins.state != 3:
@@ -65,6 +69,8 @@ class InstanceWatcher:
                         title=f"Alas <{ins.config_name}> instance restarted too many times",
                         content=f"Too many critical error occurred, instance restarted too many times",
                     )
+        for i in ins_inexists:
+            self.remove_instance(i)
 
         for i in ins_has_triggered:
             self.remove_instance(i)
@@ -108,6 +114,7 @@ class InstanceWatcher:
     def check_instance_status(self):
         for config_name in self.get_all_prev_instance():
             if not has_config_mod(config_name):
+                self.remove_status_file(config_name)
                 continue
             ins = ProcessManager.get_manager(config_name)
             if ins.alive: