diff --git a/apps/monitor/tasks.py b/apps/monitor/tasks.py
index 8ca22616..feefdf8c 100644
--- a/apps/monitor/tasks.py
+++ b/apps/monitor/tasks.py
@@ -29,7 +29,7 @@ def clear_dbbackup(num: int=7):
     from apps.monitor.views import get_file_list
     backpath = settings.BACKUP_PATH + '/database'
     files = get_file_list(backpath)
-    files_remove_list = files[6:]
+    files_remove_list = files[num:]
     for f in files_remove_list:
         filepath = os.path.join(backpath, f)
         os.remove(filepath)