diff --git a/src/ch/ch_monitor.c b/src/ch/ch_monitor.c
index 253a7d5be7c..7d7f255eb16 100644
--- a/src/ch/ch_monitor.c
+++ b/src/ch/ch_monitor.c
@@ -256,6 +256,11 @@ virCHMonitorBuildDiskJson(virJSONValuePtr disks, virDomainDiskDefPtr diskdef)
         diskdef->src->path != NULL &&
         diskdef->src->type == VIR_STORAGE_TYPE_FILE) {
         disk = virJSONValueNewObject();
+        if (diskdef->bus != VIR_DOMAIN_DISK_BUS_VIRTIO) {
+            virReportError(VIR_ERR_INVALID_ARG,
+                           _("Only virtio bus types are supported for '%s'"), diskdef->src->path);
+            goto cleanup;
+        }
         if (!virFileExists(diskdef->src->path)) {
             virReportError(VIR_ERR_INVALID_ARG,
                            _("failed to find disk '%s'"), diskdef->src->path);