diff -Naur bluez-4.50~orig/Makefile.tools bluez-4.50/Makefile.tools
--- bluez-4.50~orig/Makefile.tools	2009-08-27 22:04:15.000000000 +0200
+++ bluez-4.50/Makefile.tools	2009-08-27 22:05:12.000000000 +0200
@@ -114,7 +114,7 @@
 
 
 if CUPS
-cupsdir = $(libdir)/cups/backend
+cupsdir = `cups-config --serverbin`/backend
 
 cups_PROGRAMS = cups/bluetooth