diff --git a/lisp/textmodes/org.el b/lisp/textmodes/org.el
index f9f4f2428ea..1551738050b 100644
--- a/lisp/textmodes/org.el
+++ b/lisp/textmodes/org.el
@@ -193,7 +193,7 @@
   "Are we using the new outline mode?")
 
 (defgroup org nil
-  "Outline-based notes management and organizer "
+  "Outline-based notes management and organizer."
   :tag "Org"
   :group 'outlines
   :group 'hypermedia