diff --git a/tree/30_generic_methods/service_stop.cf b/tree/30_generic_methods/service_stop.cf
index 55d65f871..749c3acc8 100644
--- a/tree/30_generic_methods/service_stop.cf
+++ b/tree/30_generic_methods/service_stop.cf
@@ -39,7 +39,7 @@ bundle agent service_stop(service_name)
     "class_prefix"      string => canonify(join("_", "promisers"));
     "args"                     slist => { "${service_name}" };
 
-  class:
+  classes:
 
     "is_inner_method" expression => "!${report_data.should_report}";