diff --git a/Common.py b/Common.py
index 5dfc4b2..1311972 100644
--- a/Common.py
+++ b/Common.py
@@ -43,7 +43,7 @@ def getTimeDelta(a, b):
     return sec+(ms/100000.0)
 
 
-def doClean():
+def _doClean():
     global _do_move_time
     _disk = psutil.disk_usage(".")
     if _disk.percent > config["max"] and getTimeDelta(datetime.now(), _do_move_time) > 3600:
@@ -51,6 +51,12 @@ def doClean():
         os.system(config["dow"])
 
 
+def doClean():
+    p = threading.Thread(target=_doClean)
+    p.setDaemon(True)
+    p.start()
+
+
 def getCurrentStatus():
     _disk = psutil.disk_usage("/")
     _mem  = psutil.virtual_memory()
@@ -64,9 +70,7 @@ def getCurrentStatus():
         _inSpeed = 0
     updateNetwork()
     if getTimeDelta(datetime.now(), _do_move_time) > 3600:
-        p = threading.Thread(target=doClean)
-        p.setDaemon(True)
-        p.start()
+        doClean()
     return {
         "memTotal": parseSize(_mem.total),
         "memUsed": parseSize(_mem.used),