diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index d460d81758ae948b397736c0ea02fdad294236c2..7c2b162dd84520d0d7d5159ffc9d2307222faaa9 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -740,7 +740,7 @@ static void encode_compound_hdr(struct xdr_stream *xdr,
 
 	dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
 	BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
-	RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
+	RESERVE_SPACE(12 + hdr->taglen);
 	*p++ = cpu_to_be32(hdr->taglen);
 	p = xdr_encode_opaque_fixed(p, hdr->tag, hdr->taglen);
 	*p++ = cpu_to_be32(hdr->minorversion);