diff --git a/lisp/gnus/gnus-kill.el b/lisp/gnus/gnus-kill.el
index 9c06d4bcd712b4fc17fcf66e841f9067a5c538b5..059a5cdf27d8fd2d73afb9997dd4f80533b59476 100644
--- a/lisp/gnus/gnus-kill.el
+++ b/lisp/gnus/gnus-kill.el
@@ -47,11 +47,9 @@
   :group 'gnus-score-kill
   :type 'boolean)
 
-(defcustom gnus-winconf-kill-file nil
+(defvar gnus-winconf-kill-file nil
   "What does this do, Lars?
-I don't know, Per."
-  :group 'gnus-score-kill
-  :type 'sexp)
+I don't know, Per.")
 
 (defcustom gnus-kill-killed t
   "*If non-nil, Gnus will apply kill files to already killed articles.