diff --git a/README.md b/README.md
index b9ca009..582e445 100644
--- a/README.md
+++ b/README.md
@@ -158,8 +158,9 @@ Alternatively file `/usr/local/etc/remount-disable` or file
 `/lib/systemd/system/remount-secure.service`
 `/usr/lib/security-misc/remount-secure`
 
-* A systemd service mounts `/proc` with `hidepid=2` at boot to prevent users
-from seeing each other's processes.
+* An optional systemd service mounts `/proc` with `hidepid=2` at boot to
+prevent users from seeing each other's processes. Not enabled because not
+compatible with pkexec.
 
 * The kernel logs are restricted to root only.