diff --git a/sys/fs/nfs/nfs_commonsubs.c b/sys/fs/nfs/nfs_commonsubs.c
--- a/sys/fs/nfs/nfs_commonsubs.c
+++ b/sys/fs/nfs/nfs_commonsubs.c
@@ -744,7 +744,7 @@
 	} else if (siz > ncl_mbuf_mhlen) {
 		panic("nfs S too big");
 	} else {
-		MGET(mp2, MT_DATA, how);
+		MGET(mp2, how, MT_DATA);
 		if (mp2 == NULL)
 			return (NULL);
 		mp2->m_next = nd->nd_md->m_next;