diff --git a/include/block/nbd.h b/include/block/nbd.h
index 4ede3b2bd0..a4c98169c3 100644
--- a/include/block/nbd.h
+++ b/include/block/nbd.h
@@ -24,6 +24,7 @@
 #include "io/channel-socket.h"
 #include "crypto/tlscreds.h"
 #include "qapi/error.h"
+#include "qemu/bswap.h"
 
 extern const BlockExportDriver blk_exp_nbd;