diff -Naur qrtr/Makefile qrtr-2/Makefile
--- qrtr/Makefile	2022-06-30 10:41:14.266483327 +0200
+++ qrtr-2/Makefile	2022-06-30 10:42:27.868202658 +0200
@@ -6,7 +6,7 @@
 CFLAGS := -Wall -g
 LDFLAGS :=
 
-prefix := /usr/local
+prefix := /usr
 bindir := $(prefix)/bin
 libdir := $(prefix)/lib
 includedir := $(prefix)/include