diff --git a/lisp/ibuf-ext.el b/lisp/ibuf-ext.el
index 7847bed6f2d..2c39b736097 100644
--- a/lisp/ibuf-ext.el
+++ b/lisp/ibuf-ext.el
@@ -180,8 +180,8 @@ QUALIFIERS is a list of the same form as
 
 See also the variables `ibuffer-filter-groups',
 `ibuffer-filtering-qualifiers', `ibuffer-filtering-alist', and the
-functions `ibuffer-switch-to-saved-filter-group',
-`ibuffer-save-filter-group'."
+functions `ibuffer-switch-to-saved-filter-groups',
+`ibuffer-save-filter-groups'."
   :type '(repeat sexp)
   :group 'ibuffer)