diff --git a/Makefile b/Makefile
index 07b105b..19755f9 100644
--- a/Makefile
+++ b/Makefile
@@ -11,12 +11,12 @@ TESTS = test/application \
 test:
 	@NODE_ENV=test ./node_modules/.bin/mocha \
 		--require should \
-		--harmony-generators \
+		--harmony \
 		$(TESTS) \
 		--bail
 
 test-cov:
-	@NODE_ENV=test node --harmony-generators \
+	@NODE_ENV=test node --harmony \
 		node_modules/.bin/istanbul cover \
 		./node_modules/.bin/_mocha \
 		-- -u exports \
@@ -25,7 +25,7 @@ test-cov:
 		--bail
 
 test-travis:
-	@NODE_ENV=test node --harmony-generators \
+	@NODE_ENV=test node --harmony \
 		node_modules/.bin/istanbul cover \
 		./node_modules/.bin/_mocha \
 		--report lcovonly \