--- imap-2004c1/src/osdep/unix/Makefile.mbxproto	2005-04-28 12:44:53.000000000 -0500
+++ imap-2004c1/src/osdep/unix/Makefile	2005-04-28 12:59:29.000000000 -0500
@@ -91,7 +91,7 @@
 # set certain other formats (e.g. mbx and mx) as the EMPTYPROTO since these
 # formats can never be empty files.
 
-CREATEPROTO=unixproto
+CREATEPROTO=mbxproto
 EMPTYPROTO=unixproto