diff --git a/man5/sysfs.5 b/man5/sysfs.5
index 55bfddc6c..85578de48 100644
--- a/man5/sysfs.5
+++ b/man5/sysfs.5
@@ -168,6 +168,10 @@ filesystems.
 This subdirectory contains various files and subdirectories that provide
 information about the running kernel.
 .TP
+.IR /sys/kernel/mm
+This subdirectory contains various files and subdirectories that provide
+information about the kernel's memory management subsystem.
+.TP
 .IR /sys/module
 This subdirectory contains one subdirectory
 for each module that is loaded into the kernel.