--- config.mk.orig	2012-02-03 10:57:39.764497742 +0100
+++ config.mk	2012-02-03 10:58:11.476496005 +0100
@@ -10,7 +10,7 @@
 PKG_CONFIG_PATH \
  := $(PKG_CONFIG_PATH):$(dir $(lastword $(MAKEFILE_LIST)))../build/lib/pkgconfig
 
-prefix = /usr/local
+prefix = /usr
 bindir = $(prefix)/games
 datarootdir = $(prefix)/share
 mandir = $(datarootdir)/man