diff --git a/examples/security/oauth/exposer.js b/examples/security/oauth/exposer.js
index be99e211a..dc68376c7 100644
--- a/examples/security/oauth/exposer.js
+++ b/examples/security/oauth/exposer.js
@@ -29,6 +29,7 @@ const td = {
         sayOk: {
             description: "A simple action protected with oauth",
             idempotent: true,
+            output: { type: "string" },
         },
     },
 };