diff --git a/offlineimap.conf b/offlineimap.conf
index 68bbb86..7ced4b8 100644
--- a/offlineimap.conf
+++ b/offlineimap.conf
@@ -465,7 +465,9 @@ localfolders = ~/Test
 # ignored for IMAP repositories, as it is queried automatically.
 # Otherwise, default value is ".".
 #
-#sep = "."
+# Don't use quotes.
+#
+#sep = .
 
 
 # This option stands in the [Repository LocalExample] section.