diff --git a/Makefile b/Makefile
index 23235271..4fd28c9b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-NAME := jbuilder
+BIN := ./_build/default/bin/main.exe
 
 default: boot.exe
 	./boot.exe -j 4 --dev
@@ -7,10 +7,10 @@ boot.exe: bootstrap.ml
 	ocaml bootstrap.ml
 
 install:
-	opam-installer -i --prefix $(PREFIX) jbuilder.install
+	$(BIN) install
 
 uninstall:
-	opam-installer -u --prefix $(PREFIX) jbuilder.install
+	$(BIN) uninstall
 
 reinstall: uninstall reinstall