diff --git a/Makefile b/Makefile
index 146b925..ba82920 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,11 @@
+PREFIX=/usr/local
+BINDIR=$(PREFIX)/bin
+
 all: pidjail
 
 pidjail: main.c
 	gcc -o $@ $^
-	chmod u+s $@
+
+.PHONY: install
+install:
+	install -D -m 4755 -o root pidjail $(BINDIR)/pidjail