diff --git a/doc/emacs/custom.texi b/doc/emacs/custom.texi
index 426c3d6748a..ad38b330023 100644
--- a/doc/emacs/custom.texi
+++ b/doc/emacs/custom.texi
@@ -2044,7 +2044,7 @@ sequences.  For example, to bind @kbd{C-c h} to the string
 @end example
 
   Non-@acronym{ASCII} characters can be specified directly in the
-string.  To bind to e.g. @samp{ol@'a}, use:
+string.  To bind to e.g.@: @samp{ol@'a}, use:
 
 @example
 (keymap-global-set "C-c h" (key-description "ol@'a"))