--- Makefile.orig	2011-01-01 15:25:04.000000000 -0500
+++ Makefile	2011-01-02 15:28:29.000000000 -0500
@@ -33,7 +33,7 @@
 ###
 # installation options
 #
-prefix = /usr/local
+prefix ?= /usr/local
 LOCALEDIR = $(prefix)/share/locale
 PROG = di
 MPROG = mi
@@ -55,7 +55,7 @@
 #
 # simple man page installation
 #
-DI_MANINSTDIR = $(INSTALL_DIR)/share/man
+DI_MANINSTDIR = $(INSTALL_DIR)/man
 DI_MANDIR = $(DI_MANINSTDIR)/man1
 MAN_TARGET = $(PROG).1
 MANPERM = 644