diff --git a/zerver/models/realm_audit_logs.py b/zerver/models/realm_audit_logs.py
index 304001d0be..f9c5704c6a 100644
--- a/zerver/models/realm_audit_logs.py
+++ b/zerver/models/realm_audit_logs.py
@@ -66,6 +66,10 @@ class AuditLogEventType(IntEnum):
     REALM_EMOJI_ADDED = 226
     REALM_EMOJI_REMOVED = 227
     REALM_LINKIFIERS_REORDERED = 228
+
+    # This event for a realm means that this server processed exported data
+    # (either from another Zulip server or a 3rd party app such as Slack),
+    # and imported the data as the given realm.
     REALM_IMPORTED = 229
     REALM_EXPORT_DELETED = 230