--- Makefile	2016-12-12 19:18:05.357761324 +0700
+++ prefix_usr	2016-12-12 19:18:42.467759669 +0700
@@ -1,7 +1,7 @@
 RELEASE_VERSION = 1.4
 
 ifndef PREFIX
-  PREFIX=/usr/local
+  PREFIX=/usr
 endif
 ifndef SYSCONFDIR
   ifeq ($(PREFIX),/usr)