diff -ruN syslinux-4.04.orig/Makefile syslinux-4.04/Makefile
--- syslinux-4.04.orig/Makefile	2011-04-18 21:24:17.000000000 +0000
+++ syslinux-4.04/Makefile	2011-05-06 17:51:20.017679237 +0000
@@ -53,7 +53,7 @@
 # files that depend only on the B phase, but may have to be regenerated
 # for "make installer".
 BSUBDIRS = codepage com32 lzo core memdisk modules mbr memdump gpxe sample \
-	   diag libinstaller dos win32 win64 dosutil
+	   libinstaller dos win32 win64 dosutil
 ITARGET  =
 IOBJECTS = $(ITARGET) \
 	utils/gethostip utils/isohybrid utils/mkdiskimage \