diff --git a/system/linux54.xml b/system/linux54.xml
index 08aa8a0..4f89b65 100644
--- a/system/linux54.xml
+++ b/system/linux54.xml
@@ -9,23 +9,20 @@
     <access mode="shared"/>
   </memoryBacking>
   <vcpu placement='static'>4</vcpu>
-  <os>
-    <type arch='x86_64' machine='q35'>hvm</type>
-    <loader readonly='yes' secure='no' type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader>    
-    <boot dev='cdrom'/>
+  <os firmware="efi">
+    <type arch="x86_64" machine="q35">hvm</type>
+    <loader secure='no'/>
+    <boot dev="cdrom"/>
   </os>
   <features>
     <acpi/>
     <apic/>
-    <vmport state='off'/>
   </features>
-  <cpu mode="host-passthrough" check="none" migratable="on">
+  <cpu mode="host-model">
     <topology sockets="1" dies="1" cores="2" threads="2"/>
   </cpu>
   <clock offset='utc'>
-    <timer name='rtc' tickpolicy='catchup'/>
-    <timer name='pit' tickpolicy='delay'/>
-    <timer name='hpet' present='no'/>
+    <timer name='kvmclock'/>
   </clock>
   <on_poweroff>destroy</on_poweroff>
   <on_reboot>restart</on_reboot>