diff --git a/config.py.example b/config.py.example
index d170f4d..65e3a41 100644
--- a/config.py.example
+++ b/config.py.example
@@ -1,19 +1,21 @@
 
-salt    = '123'
-title   = 'My site'
+title   = 'My site'          # root name
 
-src     = 'data/src'
-dst     = 'data/dst'
-hidedst = 'data/hidedst'
-mangle  = 'm/'
+salt    = '123'              # salt for names mangling
+mangle  = 'm/'               # mangling prefix
 
-url     = 'https://my.site/files'
-hideurl = 'https://my.site/private'
+src     = 'data/src'         # directory where files has been stored
+dst     = 'data/dst'         # target dir where hardlinks will be created
+hidedst = 'data/hidedst'     # dir to store indicies for hidden files
+guardsecs = 60               # guard time to prevent indexing during file uploading
 
-thumbw  = 120
-thumbh  = 90
-thumbcolor = 0xffffff
+url     = 'https://my.site/files'   # external url
+hideurl = 'https://my.site/private' # external url for hidden area
 
-ffprobe = '/usr/bin/ffprobe'
-ffmpeg = '/usr/bin/ffmpeg'
-magick = '/usr/bin/convert'
+thumbw  = 120                # thumbnail width
+thumbh  = 90                 # thumbnail height
+thumbcolor = 0xffffff        # thumbnail color
+
+ffprobe = '/usr/bin/ffprobe' # path to ffprobe executable
+ffmpeg = '/usr/bin/ffmpeg'   # path to ffmpeg executable
+magick = '/usr/bin/convert'  # path to imagemagick/convert executable
diff --git a/indexer.py b/indexer.py
index ccd5c14..815b702 100755
--- a/indexer.py
+++ b/indexer.py
@@ -231,10 +231,13 @@ hidetpl = template.TplLoader.load("tpl/hide.tpl")
 
 n = Node(None, config.src, '')
 n.scan()
+if time.time() - n.date <= config.guardsecs:
+    print('files are being update just now')
+    exit(0)
 n.make()
 
 clean(config.dst)
 clean(config.hidedst)
 
-print('done')
+#print('done')