diff --git a/doc/misc/cl.texi b/doc/misc/cl.texi
index 76f739f1ed6..709e9836c90 100644
--- a/doc/misc/cl.texi
+++ b/doc/misc/cl.texi
@@ -4395,7 +4395,7 @@ is expanded at compile-time to the Lisp form
 @end example
 
 @noindent
-which is the most efficient ways of doing this operation
+which is the most efficient way of doing this operation
 in Lisp.  Thus, there is no performance penalty for using the more
 readable @code{cl-incf} form in your compiled code.