diff --git a/src/vm/VirtualMachine.cc b/src/vm/VirtualMachine.cc
index 32d5b3d974..4589984ee2 100644
--- a/src/vm/VirtualMachine.cc
+++ b/src/vm/VirtualMachine.cc
@@ -2894,7 +2894,7 @@ void VirtualMachine::get_public_clouds(const string& pname, set<string> &clouds)
 /* -------------------------------------------------------------------------- */
 
 static std::map<std::string,std::vector<std::string>> UPDATECONF_ATTRS = {
-    {"OS", {"ARCH", "MACHINE", "KERNEL", "INITRD", "BOOTLOADER", "BOOT", "KERNEL_CMD", "ROOT"} },
+    {"OS", {"ARCH", "MACHINE", "KERNEL", "INITRD", "BOOTLOADER", "BOOT", "KERNEL_CMD", "ROOT", "SD_DISK_BUS"} },
     {"FEATURES", {"PAE", "ACPI", "APIC", "LOCALTIME", "HYPERV", "GUEST_AGENT",
          "VIRTIO_SCSI_QUEUES"} },
     {"INPUT", {"TYPE", "BUS"} },