diff --git a/pelicanconf.py b/pelicanconf.py
index 5080a7e..d4b14c3 100644
--- a/pelicanconf.py
+++ b/pelicanconf.py
@@ -13,7 +13,7 @@ TIMEZONE = 'Asia/Seoul'
 
 DEFAULT_LANG = 'en'
 DEFAULT_DATE = 'fs'
-FILENAME_METADATA = '(?P<title>.*)'
+FILENAME_METADATA = '(?P<date>\d{4}-\d{2}-\d{2})_(?P<title>.*)'
 
 # Feed generation is usually not desired when developing
 FEED_ALL_ATOM = None