diff --git a/org-contacts.el b/org-contacts.el
index 34370fd..4b3693a 100644
--- a/org-contacts.el
+++ b/org-contacts.el
@@ -59,6 +59,7 @@
 (require 'mail-utils)
 (require 'org-agenda)
 (require 'org-capture)
+(require 'ol)
 
 (defgroup org-contacts nil
   "Options about contacts management."