diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index 8045371..b467690 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -87,7 +87,7 @@
     .name = "s390_virtio_ccw_dev_tmp",
     .pre_save = virtio_ccw_dev_tmp_pre_save,
     .post_load = virtio_ccw_dev_tmp_post_load,
-    .fields = (VMStateField[]) {
+    .fields = (const VMStateField[]) {
         VMSTATE_UINT16(config_vector, VirtioCcwDeviceTmp),
         VMSTATE_END_OF_LIST()
     }
@@ -98,7 +98,7 @@
     .version_id = 1,
     .minimum_version_id = 1,
     .post_load = virtio_ccw_dev_post_load,
-    .fields = (VMStateField[]) {
+    .fields = (const VMStateField[]) {
         VMSTATE_CCW_DEVICE(parent_obj, VirtioCcwDevice),
         VMSTATE_PTR_TO_IND_ADDR(indicators, VirtioCcwDevice),
         VMSTATE_PTR_TO_IND_ADDR(indicators2, VirtioCcwDevice),