diff --git a/tmux.1 b/tmux.1
index 43c20103..4fdb7f77 100644
--- a/tmux.1
+++ b/tmux.1
@@ -3361,6 +3361,7 @@ The following variables are available, where appropriate:
 .It Li "client_created_string" Ta "" Ta "String time client created"
 .It Li "client_control_mode" Ta "" Ta "1 if client is in control mode"
 .It Li "client_height" Ta "" Ta "Height of client"
+.It Li "client_key_table" Ta "" Ta "Current key table"
 .It Li "client_last_session" Ta "" Ta "Name of the client's last session"
 .It Li "client_pid" Ta "" Ta "PID of client process"
 .It Li "client_prefix" Ta "" Ta "1 if prefix key has been pressed"