diff --git a/grails-forge-web-netty/src/main/resources/application.yml b/grails-forge-web-netty/src/main/resources/application.yml
index 0e1baf32..4449de03 100644
--- a/grails-forge-web-netty/src/main/resources/application.yml
+++ b/grails-forge-web-netty/src/main/resources/application.yml
@@ -11,7 +11,7 @@ micronaut:
         web:
           allowed-origins:
             - https://grails.github.io
-            - ${CORS_ALLOWED_ORIGIN:https://start.grails.org}
+            - ${CORS_ALLOWED_ORIGIN:'https://start.grails.org'}
           allowedMethods:
             - GET
   http: