diff --git a/interfaces/xenmgr_vm.xml b/interfaces/xenmgr_vm.xml
index 14bf5e6..ba41e95 100644
--- a/interfaces/xenmgr_vm.xml
+++ b/interfaces/xenmgr_vm.xml
@@ -208,6 +208,7 @@
     <property name="nestedhvm" type="b" access="readwrite"><tp:docstring>Enable nested virtualization</tp:docstring></property>
     <property name="serial" type="s" access="readwrite"><tp:docstring>Serial port specification</tp:docstring></property>
     <property name="bios" type="s" access="readwrite"><tp:docstring>Bios specification</tp:docstring></property>
+    <property name="hdtype" type="s" access="readwrite"><tp:docstring>Hard disk type specification, 'ide' or 'ahci'</tp:docstring></property>
 
     <method name="get_db_key">
       <tp:docstring>Get the value of a VM db key.</tp:docstring>
@@ -545,6 +546,7 @@
     <property name="nestedhvm" type="b" access="readwrite"><tp:docstring>Enable nested virtualization</tp:docstring></property>
     <property name="serial" type="s" access="readwrite"><tp:docstring>Serial port specification</tp:docstring></property>
     <property name="bios" type="s" access="readwrite"><tp:docstring>Bios specification</tp:docstring></property>
+    <property name="hdtype" type="s" access="readwrite"><tp:docstring>Hard disk type specification, 'ide' or 'ahci'</tp:docstring></property>
   </interface>
 
   <interface name="com.citrix.xenclient.xenmgr.vm.product">