diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 99c3ec3a5..8f2a99385 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -3,6 +3,10 @@
 	* org-exp.el (org-export): Added taskjuggler export to the export
 	dispatcher.
 
+2010-06-08  Bastien Guerry  <bzg@altern.org>
+
+	* org-timer.el (org-timer-set-timer): Fix typo in the docstring.
+
 2010-05-28  Bastien Guerry  <bzg@altern.org>
 
 	* org-timer.el (org-timer-set-timer): Use a prefix argument.
diff --git a/lisp/org-timer.el b/lisp/org-timer.el
index 88ae69a79..e0817c8df 100644
--- a/lisp/org-timer.el
+++ b/lisp/org-timer.el
@@ -320,10 +320,10 @@ prompt the use if she wants to replace it.
 Called with a numeric prefix argument, use this numeric value as
 the duration of the timer.
 
-Called with a `C-u' prefix argument, use `org-timer-default-timer'
+Called with a `C-u' prefix arguments, use `org-timer-default-timer'
 without prompting the user for a duration.
 
-With two `C-u' prefix argument, use `org-timer-default-timer'
+With two `C-u' prefix arguments, use `org-timer-default-timer'
 without prompting the user for a duration and automatically
 replace any running timer."
   (interactive "P")