diff --git a/pelicanconf.py b/pelicanconf.py
index 51a4a00..4e7afa3 100644
--- a/pelicanconf.py
+++ b/pelicanconf.py
@@ -37,7 +37,7 @@ TIMEZONE = 'America/New_York'
 DEFAULT_LANG = u'en'
 
 # Atom all feed.
-FEED_ALL_ATOM = True
+FEED_ALL_ATOM = 'True'
 
 # Feed generation is usually not desired when developing
 CATEGORY_FEED_ATOM = None