diff --git a/Makefile b/Makefile
index c87759e7..641b2676 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,6 @@
+BUNDLE=$(shell test -d ./vendor/bundle && echo bundle exec)
 check:
 #	rake test
-	rspec spec --drb --color
+	$(BUNDLE) rspec spec --drb --color
 
 PHONY: check