diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst
index 8da1b72818273..9285f69f4f735 100644
--- a/Documentation/admin-guide/mm/damon/usage.rst
+++ b/Documentation/admin-guide/mm/damon/usage.rst
@@ -389,7 +389,7 @@ 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`` `implementation <sysfs_contexts>` is being used.