diff --git a/lisp/window.el b/lisp/window.el
index 818bd3dd2bd..f96c887be48 100644
--- a/lisp/window.el
+++ b/lisp/window.el
@@ -6831,7 +6831,7 @@ See `display-buffer' for details.")
 (put 'display-buffer-overriding-action 'risky-local-variable t)
 
 (defcustom display-buffer-alist nil
-  "Alist of uder-defined conditional actions for `display-buffer'.
+  "Alist of user-defined conditional actions for `display-buffer'.
 Its value takes effect before `display-buffer-base-action'
 and `display-buffer-fallback-action', but after
 `display-buffer-overriding-action', which see.