diff --git a/www/manager6/window/PCIMapEdit.js b/www/manager6/window/PCIMapEdit.js
index d43f04eb..faf58255 100644
--- a/www/manager6/window/PCIMapEdit.js
+++ b/www/manager6/window/PCIMapEdit.js
@@ -126,8 +126,10 @@ Ext.define('PVE.window.PCIMapEditWindow', {
 	    this.lookup('pciselector').setMdev(value);
 	},
 
-	nodeChange: function(_field, value) {
-	    this.lookup('pciselector').setNodename(value);
+	nodeChange: function(field, value) {
+	    if (!field.isDisabled()) {
+		this.lookup('pciselector').setNodename(value);
+	    }
 	},
 
 	pciChange: function(_field, value) {
diff --git a/www/manager6/window/USBMapEdit.js b/www/manager6/window/USBMapEdit.js
index 358f0778..69a40026 100644
--- a/www/manager6/window/USBMapEdit.js
+++ b/www/manager6/window/USBMapEdit.js
@@ -101,9 +101,11 @@ Ext.define('PVE.window.USBMapEditWindow', {
 	    usbsel.setDisabled(!value);
 	},
 
-	nodeChange: function(_field, value) {
-	    this.lookup('id').setNodename(value);
-	    this.lookup('path').setNodename(value);
+	nodeChange: function(field, value) {
+	    if (!field.isDisabled()) {
+		this.lookup('id').setNodename(value);
+		this.lookup('path').setNodename(value);
+	    }
 	},