diff --git a/cinder/message/message_field.py b/cinder/message/message_field.py
index efdedcc5d2f..dac75aad4ed 100644
--- a/cinder/message/message_field.py
+++ b/cinder/message/message_field.py
@@ -14,7 +14,9 @@
 
 Use Resource, Action and Detail's combination to indicate the Event
 in the format of:
-    EVENT: VOLUME_RESOURCE_ACTION_DETAIL
+
+EVENT: VOLUME_RESOURCE_ACTION_DETAIL
+
 Also, use exception-to-detail mapping to decrease the workload of
 classifying event in cinder's task code.
 """