diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst
index 9d23144bf985..87fdc258d102 100644
--- a/Documentation/admin-guide/mm/damon/usage.rst
+++ b/Documentation/admin-guide/mm/damon/usage.rst
@@ -450,7 +450,7 @@ pages of all memory cgroups except ``/having_care_already``.::
     # # further filter out all cgroups except one at '/having_care_already'
     echo memcg > 1/type
     echo /having_care_already > 1/memcg_path
-    echo N > 1/matching
+    echo Y > 1/matching
 
 Note that ``anon`` and ``memcg`` filters are currently supported only when
 ``paddr`` :ref:`implementation <sysfs_context>` is being used.