diff --git a/hw/dma/xlnx_csu_dma.c b/hw/dma/xlnx_csu_dma.c
index 84f782fcdc0c..60ada3286b43 100644
--- a/hw/dma/xlnx_csu_dma.c
+++ b/hw/dma/xlnx_csu_dma.c
@@ -744,6 +744,7 @@ static const TypeInfo xlnx_csu_dma_info = {
     .parent        = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(XlnxCSUDMA),
     .class_init    = xlnx_csu_dma_class_init,
+    .class_size    = sizeof(XlnxCSUDMAClass),
     .instance_init = xlnx_csu_dma_init,
     .interfaces = (InterfaceInfo[]) {
         { TYPE_STREAM_SINK },