diff --git a/v2rayN/ServiceLib/Common/FileManager.cs b/v2rayN/ServiceLib/Common/FileManager.cs
index b7bc3a8f..11d03eb0 100644
--- a/v2rayN/ServiceLib/Common/FileManager.cs
+++ b/v2rayN/ServiceLib/Common/FileManager.cs
@@ -196,5 +196,26 @@ namespace ServiceLib.Common
                 }
             }
         }
+
+        public static void DeleteExpiredFiles(string sourceDir, DateTime dtLine)
+        {
+            try
+            {
+                var files = Directory.GetFiles(sourceDir, "*.*");
+                foreach (var filePath in files)
+                {
+                    var file = new FileInfo(filePath);
+                    if (file.CreationTime >= dtLine)
+                    {
+                        continue;
+                    }
+                    file.Delete();
+                }
+            }
+            catch
+            {
+                // ignored
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/v2rayN/ServiceLib/Common/Logging.cs b/v2rayN/ServiceLib/Common/Logging.cs
index c8b07053..7031260f 100644
--- a/v2rayN/ServiceLib/Common/Logging.cs
+++ b/v2rayN/ServiceLib/Common/Logging.cs
@@ -25,36 +25,6 @@ namespace ServiceLib.Common
             }
         }
 
-        public static void ClearLogs()
-        {
-            Task.Run(() =>
-            {
-                try
-                {
-                    var now = DateTime.Now.AddMonths(-1);
-                    var dir = Utils.GetLogPath();
-                    var files = Directory.GetFiles(dir, "*.txt");
-                    foreach (var filePath in files)
-                    {
-                        var file = new FileInfo(filePath);
-                        if (file.CreationTime >= now) continue;
-                        try
-                        {
-                            file.Delete();
-                        }
-                        catch
-                        {
-                            // ignored
-                        }
-                    }
-                }
-                catch
-                {
-                    // ignored
-                }
-            });
-        }
-
         public static void SaveLog(string strContent)
         {
             if (!LogManager.IsLoggingEnabled()) return;
diff --git a/v2rayN/ServiceLib/Handler/AppHandler.cs b/v2rayN/ServiceLib/Handler/AppHandler.cs
index 0a3a2815..087918f9 100644
--- a/v2rayN/ServiceLib/Handler/AppHandler.cs
+++ b/v2rayN/ServiceLib/Handler/AppHandler.cs
@@ -79,8 +79,8 @@
         {
             Logging.SaveLog($"v2rayN start up | {Utils.GetRuntimeInfo()}");
             Logging.LoggingEnabled(_config.GuiItem.EnableLog);
-            Logging.ClearLogs();
-            ClearTemps();
+
+            ClearExpiredFiles();
 
             return true;
         }
@@ -92,33 +92,12 @@
             return true;
         }
 
-        private void ClearTemps()
+        private void ClearExpiredFiles()
         {
             Task.Run(() =>
             {
-                try
-                {
-                    var now = DateTime.Now.AddMonths(-1);
-                    var dir = Utils.GetTempPath();
-                    var files = Directory.GetFiles(dir, "*.*");
-                    foreach (var filePath in files)
-                    {
-                        var file = new FileInfo(filePath);
-                        if (file.CreationTime >= now) continue;
-                        try
-                        {
-                            file.Delete();
-                        }
-                        catch
-                        {
-                            // ignored
-                        }
-                    }
-                }
-                catch
-                {
-                    // ignored
-                }
+                FileManager.DeleteExpiredFiles(Utils.GetLogPath(), DateTime.Now.AddMonths(-1));
+                FileManager.DeleteExpiredFiles(Utils.GetTempPath(), DateTime.Now.AddMonths(-1));
             });
         }