diff --git a/Base/usr/share/man/man7/sys.md b/Base/usr/share/man/man7/sys.md
index 87f9c97195..c16d361734 100644
--- a/Base/usr/share/man/man7/sys.md
+++ b/Base/usr/share/man/man7/sys.md
@@ -55,6 +55,7 @@ them.
 * **`stats`** - This node exports statistics on scheduler timing data.
 * **`system_mode`** - This node exports the chosen system mode as it was decided based on the kernel commandline or a default value.
 * **`uptime`** - This node exports the uptime data.
+* **`jails`** - This node exports information about existing jails (only if the current process is not in jail).
 * **`power_state`** - This node only responds to write requests on it. A written value of `1` results
 in system reboot. A written value of `2` results in system shutdown.