diff --git a/fs/nfsd/flexfilelayoutxdr.c b/fs/nfsd/flexfilelayoutxdr.c
index f9f7e38cba13..7f357dbd1bb1 100644
--- a/fs/nfsd/flexfilelayoutxdr.c
+++ b/fs/nfsd/flexfilelayoutxdr.c
@@ -94,7 +94,8 @@ nfsd4_ff_encode_getdeviceinfo(struct xdr_stream *xdr,
 	}
 
 	/* len + padding for two strings */
-	addr_len = 16 + da->netaddr.netid_len + da->netaddr.addr_len;
+	addr_len = 8 + xdr_align_size(da->netaddr.netid_len) +
+		   xdr_align_size(da->netaddr.addr_len);
 	ver_len = 20;
 
 	len = 4 + ver_len + 4 + addr_len;