--- a/Makefile	2025-05-13 22:52:36.140148274 +0300
+++ b/Makefile	2025-05-13 22:52:52.137245618 +0300
@@ -3,7 +3,7 @@
 LIBTREE_DEFINES = -D_FILE_OFFSET_BITS=64
 
 # uppercase variables for backwards compatibility only:
-PREFIX = /usr/local
+PREFIX = /usr
 
 prefix = $(PREFIX)
 exec_prefix = $(prefix)