diff --git a/tools/virsh.pod b/tools/virsh.pod
index abed66dfda78be44e21145b7e3b825eb94f8fb6c..77f93830121550f07a80d66c99284c6d8ab9b94a 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -307,6 +307,7 @@ in seconds for which the host has to be suspended, it should be at least
 60 seconds.
 
 =item B<node-memory-tune> [I<shm-pages-to-scan>] [I<shm-sleep-millisecs>]
+I<shm-merge-across-nodes>
 
 Allows you to display or set the node memory parameters.
 I<shm-pages-to-scan> can be used to set the number of pages to scan
@@ -317,6 +318,9 @@ different numa nodes can be merged. When set to 0, only pages which physically
 reside in the memory area of same NUMA node can be merged. When set to 1,
 pages from all nodes can be merged. Default to 1.
 
+B<Note>: Currently the "shared memory service" only means KSM (Kernel Samepage
+Merging).
+
 =item B<capabilities>
 
 Print an XML document describing the capabilities of the hypervisor