diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 41909f7bd7..08c7de416f 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -80,6 +80,7 @@
 
 GlobalProperty pc_compat_9_0[] = {
     { TYPE_X86_CPU, "guest-phys-bits", "0" },
+    { "sev-guest", "legacy-vm-type", "true" },
 };
 const size_t pc_compat_9_0_len = G_N_ELEMENTS(pc_compat_9_0);
 
diff --git a/target/i386/sev.c b/target/i386/sev.c
index f4ee317cb0..d30b68c11e 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -1417,6 +1417,7 @@ sev_guest_instance_init(Object *obj)
     object_property_add_uint32_ptr(obj, "reduced-phys-bits",
                                    &sev->reduced_phys_bits,
                                    OBJ_PROP_FLAG_READWRITE);
+    object_apply_compat_props(obj);
 }
 
 /* sev guest info */