diff --git a/etc/ironic/ironic.conf.sample b/etc/ironic/ironic.conf.sample
index 9f7fffebea..4db6222ea4 100644
--- a/etc/ironic/ironic.conf.sample
+++ b/etc/ironic/ironic.conf.sample
@@ -250,7 +250,7 @@
 
 # List of logger=LEVEL pairs. This option is ignored if
 # log_config_append is set. (list value)
-#default_log_levels=amqp=WARN,amqplib=WARN,boto=WARN,qpid=WARN,sqlalchemy=WARN,suds=INFO,oslo.messaging=INFO,requests.packages.urllib3.connectionpool=WARN,urllib3.connectionpool=WARN,websocket=WARN,requests.packages.urllib3.util.retry=WARN,urllib3.util.retry=WARN,keystonemiddleware=WARN,routes.middleware=WARN,stevedore=WARN,taskflow=WARN
+#default_log_levels=amqp=WARN,amqplib=WARN,boto=WARN,qpid=WARN,sqlalchemy=WARN,suds=INFO,oslo.messaging=INFO,iso8601=WARN,requests.packages.urllib3.connectionpool=WARN,urllib3.connectionpool=WARN,websocket=WARN,requests.packages.urllib3.util.retry=WARN,urllib3.util.retry=WARN,keystonemiddleware=WARN,routes.middleware=WARN,stevedore=WARN,taskflow=WARN
 
 # Enables or disables publication of error events. (boolean
 # value)
@@ -2054,3 +2054,5 @@
 # Port on which VirtualBox web service is listening. (port
 # value)
 #port=18083
+
+