diff --git a/examples/ansible.cfg b/examples/ansible.cfg
index 85eada17cc8..3800a9ea464 100644
--- a/examples/ansible.cfg
+++ b/examples/ansible.cfg
@@ -38,6 +38,9 @@ gathering = implicit
 # uncomment this to disable SSH key host checking
 #host_key_checking = False
 
+# enable additional callbacks
+#callback_whitelist = timer
+
 # change this for alternative sudo implementations
 sudo_exe = sudo