diff --git a/nova/compute/hvtype.py b/nova/compute/hvtype.py
index ff9bff61bab..d6b6d35dade 100644
--- a/nova/compute/hvtype.py
+++ b/nova/compute/hvtype.py
@@ -25,8 +25,8 @@
 from nova import exception
 
 
-# This list is taken from libvirt, with OpenStack
-# specific 'baremetal' & 'fake' then added in.
+# This list is all known hypervisors
+# even if not currently supported by OpenStack.
 BAREMETAL = "baremetal"
 BHYVE = "bhyve"
 FAKE = "fake"
@@ -43,6 +43,7 @@
 VBOX = "vbox"
 VMWARE = "vmware"
 XEN = "xen"
+ZVM = "zvm"
 
 ALL = (
     BAREMETAL,
@@ -61,6 +62,7 @@
     VBOX,
     VMWARE,
     XEN,
+    ZVM,
 )