diff --git a/makefile b/makefile
index 3587aa3ea..f7226602a 100644
--- a/makefile
+++ b/makefile
@@ -23,4 +23,6 @@ build: build-deps
 .ONESHELL:
 test: build
 	eval $(opam env)
-	dune build @ligo-test
+	if [ ! dune build @ligo-test ]
+	then echo "If you get a error message that dune can't be found/isn't in your path, run 'eval $(opam env)' and this command will work.";
+	fi