diff --git a/share/doc/xsd/opennebula_configuration.xsd b/share/doc/xsd/opennebula_configuration.xsd
index 7f4903765a..02bef67709 100644
--- a/share/doc/xsd/opennebula_configuration.xsd
+++ b/share/doc/xsd/opennebula_configuration.xsd
@@ -367,6 +367,7 @@
         <xs:element name="VM_MANAGE_OPERATIONS" type="xs:string" minOccurs="0" maxOccurs="1"/>
         <xs:element name="VM_MONITORING_EXPIRATION_TIME" type="xs:string" minOccurs="0" maxOccurs="unbounded"/>
         <xs:element name="VM_RESTRICTED_ATTR" type="xs:string" minOccurs="0" maxOccurs="unbounded"/>
+        <xs:element name="VM_SNAPSHOT_FACTOR" type="xs:string" minOccurs="0" maxOccurs="1"/>
 
         <xs:element name="VM_SUBMIT_ON_HOLD" minOccurs="0" maxOccurs="1">
           <xs:simpleType>