diff --git a/lisp/mouse.el b/lisp/mouse.el
index 7af34c20935..15e5c794bc6 100644
--- a/lisp/mouse.el
+++ b/lisp/mouse.el
@@ -1048,7 +1048,7 @@ The text is saved in the kill ring, as with \\[kill-region]."
 (defun mouse-yank-at-click (click arg)
   "Insert the last stretch of killed text at the position clicked on.
 Also move point to one end of the text thus inserted (normally the end),
-and set mark at the beginning..
+and set mark at the beginning.
 Prefix arguments are interpreted as with \\[yank].
 If `mouse-yank-at-point' is non-nil, insert at point
 regardless of where you click."