diff --git a/private/model/api/eventstream_tmpl.go b/private/model/api/eventstream_tmpl.go
index 116f175967a..64846cfaaa8 100644
--- a/private/model/api/eventstream_tmpl.go
+++ b/private/model/api/eventstream_tmpl.go
@@ -118,7 +118,7 @@ type {{ $esapi.Name }} struct {
 // is called.
 {{- end }}
 //
-//   es := New{{ $esapi.Name }}(func(o *{{ $esapi.Name}}{
+//   es := New{{ $esapi.Name }}(func(o *{{ $esapi.Name}}){
 {{- if $inputStream }}
 //       es.Writer = myMockStreamWriter
 {{- end }}