diff --git a/www/manager6/qemu/PCIEdit.js b/www/manager6/qemu/PCIEdit.js
index 4e8ed74..52f92c2 100644
--- a/www/manager6/qemu/PCIEdit.js
+++ b/www/manager6/qemu/PCIEdit.js
@@ -109,7 +109,9 @@ Ext.define('PVE.qemu.PCIInputPanel', {
                 // FIXME: what if no confid was found??
             }
 
-            values.host?.replace(/^0000:/, ''); // remove optional '0000' domain
+            if (values.host) {
+                values.host = values.host.replace(/^0000:/, ''); // remove optional '0000' domain
+            }
 
             if (values.multifunction && values.host) {
                 values.host = values.host.substring(0, values.host.indexOf('.')); // skip the '.X'