--- ambdec-0.5.1/source/Makefile.old	2011-07-10 14:35:41.000000000 +0200
+++ ambdec-0.5.1/source/Makefile			2012-10-18 19:35:18.415583000 +0200
@@ -19,7 +19,7 @@
 # ----------------------------------------------------------------------------
 
 
-PREFIX = /usr/local
+PREFIX = /usr/
 SUFFIX := $(shell uname -m | sed -e 's/^unknown/$//' -e 's/^i.86/$//' -e 's/^x86_64/$/64/')
 LIBDIR = lib$(SUFFIX)
 SHARED = $(PREFIX)/share/ambdec