diff --git a/CalendarNotepad/WorkMain.cs b/CalendarNotepad/WorkMain.cs
index 0910663..b24fd8e 100644
--- a/CalendarNotepad/WorkMain.cs
+++ b/CalendarNotepad/WorkMain.cs
@@ -402,7 +402,7 @@ namespace CalendarNotepad
             }
             var item = items[0];
             var fk = item.SubItems[2].Text;
-            var fileNam = item.Text;
+            var fileName = item.Text;
             var qu = this.Db.Queryable<PlusFileUnit>()
                 .Where(a => a.FileId == fk)
                 .Select(a => a.FileContent)
@@ -413,13 +413,16 @@ namespace CalendarNotepad
             }
             var fc = qu.First();
             var tempPath = Path.GetTempPath();
-            var ran = new Random();
-            var fn = ran.NextInt64(10000,99999).ToString();
+            //var ran = new Random();
+            //var fn = ran.NextInt64(10000,99999).ToString();
             var path = Path.Combine(tempPath,"CalendarNotepadFile");
             if(!Directory.Exists(path)) {
                 Directory.CreateDirectory(path);
             }
-            var fullPath = Path.Combine(path,fn + ".txt");
+            var fullPath = Path.Combine(path,fileName);
+            if(File.Exists(fullPath)) {
+                File.Delete(fullPath);
+            }
             using(var fs = File.Create(fullPath,fc.Length)) {
                 fs.Write(fc,0,fc.Length);
                 fs.Close();