diff --git a/shell/plugins/panels/monitor/Panel.qml b/shell/plugins/panels/monitor/Panel.qml
index 1753906e..1da654d5 100644
--- a/shell/plugins/panels/monitor/Panel.qml
+++ b/shell/plugins/panels/monitor/Panel.qml
@@ -300,7 +300,13 @@ Panel {
     if (!name) return
     if (enabled && root.enabledDisplayCount <= 1) return
 
-    actionProc.command = ["hyprctl", "keyword", "monitor", name + (enabled ? ",disable" : ",preferred,auto,auto")]
+    // hyprctl keyword is rejected under the Lua config ("non-legacy parsers"),
+    // so drive the monitor through the hl.monitor eval API instead. Connector
+    // names come from hyprctl itself and match ^[A-Za-z0-9._-]+$.
+    var expr = enabled
+      ? 'hl.monitor({ output = "' + name + '", disabled = true })'
+      : 'hl.monitor({ output = "' + name + '", disabled = false, mode = "preferred", position = "auto", scale = "auto" })'
+    actionProc.command = ["hyprctl", "eval", expr]
     if (!actionProc.running) actionProc.running = true
   }