--- transport.c.orig	2016-03-02 22:40:02.000000000 -0600
+++ transport.c	2016-03-02 22:41:02.000000000 -0600
@@ -1752,7 +1752,7 @@
     {
     if (split_spool_directory)
 	sprintf(CS spool_file, "%s%c/%s-D",
-		      spool_dir, new_message_id[5], msgq[i].message_id);
+			spool_dir, msgq[i].message_id[5], msgq[i].message_id);
     else
 	sprintf(CS spool_file, "%s%s-D", spool_dir, msgq[i].message_id);