diff --git a/roles/mailman/tasks/main.yml b/roles/mailman/tasks/main.yml
index 27c58a10db..2523c5a276 100644
--- a/roles/mailman/tasks/main.yml
+++ b/roles/mailman/tasks/main.yml
@@ -134,5 +134,5 @@
 
 
 
-handlers:
-- include: $handlers/restart_services.yml
+- handlers:
+  - include: $handlers/restart_services.yml