diff --git a/README.md b/README.md
index 4f0f3d1..8f50a78 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,7 @@ func main() {
 
 ```bash
 $ ./cef
-CEF:1|Cool Vendor|Cool Product|1.0|FLAKY_EVENT|Something flaky happened.|3|sourceAddress=127.0.0.1 requestClientApplication=Go-http-client/1.1
+CEF:0|Cool Vendor|Cool Product|1.0|FLAKY_EVENT|Something flaky happened.|3|sourceAddress=127.0.0.1 requestClientApplication=Go-http-client/1.1
 ```
 
 ## Not yet implemented