diff --git a/include/uapi/linux/nfs.h b/include/uapi/linux/nfs.h
index 057d22a48416..946cb62d64b0 100644
--- a/include/uapi/linux/nfs.h
+++ b/include/uapi/linux/nfs.h
@@ -12,6 +12,7 @@
 
 #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