diff --git a/oxrlib/config.py b/oxrlib/config.py
index 17d75c379ccbde9a4c1ff398136dce85ae2fcedb..92dcffcb44cf5486753c6623b9dd26a5450022b7 100644
--- a/oxrlib/config.py
+++ b/oxrlib/config.py
@@ -20,7 +20,7 @@ def currency_code(s):
 
 def date_from(fmt_s):
     def date_from_fmt(s):
-        return datetime.datetime.strptime(s, fmt_s).date
+        return datetime.datetime.strptime(s, fmt_s).date()
     return date_from_fmt
 
 class Configuration: