diff --git a/circe-serenity.el b/circe-serenity.el
index d7c3dc9..db73761 100644
--- a/circe-serenity.el
+++ b/circe-serenity.el
@@ -31,6 +31,8 @@
 
 ;;; Code:
 
+(require 'lui-format)
+
 (defvar circe-serenity-longest-nick 0
   "The longest known nick.")
 (make-variable-buffer-local 'circe-serenity-longest-nick)