diff --git a/libc/kernel/uapi/linux/nfs.h b/libc/kernel/uapi/linux/nfs.h
index ac11084..e8c0499 100644
--- a/libc/kernel/uapi/linux/nfs.h
+++ b/libc/kernel/uapi/linux/nfs.h
@@ -21,6 +21,7 @@
 #include <linux/types.h>
 #define NFS_PROGRAM 100003
 #define NFS_PORT 2049
+#define NFS_RDMA_PORT 20049
 #define NFS_MAXDATA 8192
 #define NFS_MAXPATHLEN 1024
 #define NFS_MAXNAMLEN 255