diff --git a/test/Microsoft.AspNet.Routing.Tests/project.json b/test/Microsoft.AspNet.Routing.Tests/project.json
index ceaf726d67..79fa211cbe 100644
--- a/test/Microsoft.AspNet.Routing.Tests/project.json
+++ b/test/Microsoft.AspNet.Routing.Tests/project.json
@@ -1,6 +1,6 @@
 {
   "compilationOptions": {
-    "warningsAsErrors": true
+    "warningsAsErrors": "true"
   },
   "dependencies": {
     "Microsoft.AspNet.Http" : "1.0.0-*",