diff --git a/examples/v3.0/callback-example.yaml b/examples/v3.0/callback-example.yaml
index 56ab18e27d..1622bd06b1 100644
--- a/examples/v3.0/callback-example.yaml
+++ b/examples/v3.0/callback-example.yaml
@@ -1,4 +1,7 @@
-# ...
+openapi: 3.0.0
+info:
+  title: Callback Example
+  version: 1.0.0
 paths:
   /streams:
     post: