diff --git a/Makefile b/Makefile
index 8a0a972..2788214 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,9 @@
 all:
 	ocamlbuild -use-ocamlfind -I src oboy.byte
 
+debug:
+	ocamlbuild -use-ocamlfind -I src oboy.d.byte
+
 clean:
 	rm -rf _build
 	rm -f *.byte