diff --git a/libraries/libvirt/README b/libraries/libvirt/README
index 790872061d..254024caa2 100644
--- a/libraries/libvirt/README
+++ b/libraries/libvirt/README
@@ -8,6 +8,8 @@ libs in place will build the respective features automatically.
 
 The group can be specified at build time like this:
 VIRTGROUP=somegroup ./libvirt.SlackBuild (default: users)
+You'll want to keep this in sync with what qemu uses (it also
+defaults to the "users" group).
 
 If you want to start the libvirt daemon at boot, add this
 to /etc/rc.d/rc.local