diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 9e13cb9e3a..e02544b2df 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -2981,7 +2981,7 @@ int virtio_set_features(VirtIODevice *vdev, uint64_t val)
     return ret;
 }
 
-size_t virtio_feature_get_config_size(VirtIOFeature *feature_sizes,
+size_t virtio_feature_get_config_size(const VirtIOFeature *feature_sizes,
                                       uint64_t host_features)
 {
     size_t config_size = 0;
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index b7ece7a6a8..8bab9cfb75 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -43,7 +43,7 @@ typedef struct VirtIOFeature {
     size_t end;
 } VirtIOFeature;
 
-size_t virtio_feature_get_config_size(VirtIOFeature *features,
+size_t virtio_feature_get_config_size(const VirtIOFeature *features,
                                       uint64_t host_features);
 
 typedef struct VirtQueue VirtQueue;