diff --git a/app/models/conversation_with_label.rb b/app/models/conversation_with_label.rb
index db3dcda35..2dc225299 100644
--- a/app/models/conversation_with_label.rb
+++ b/app/models/conversation_with_label.rb
@@ -39,6 +39,7 @@
 class ConversationWithLabel < ApplicationRecord
   def self.refresh
     # https://github.com/scenic-views/scenic#what-about-materialized-views
+    # needs atleast one unuque index for concurrent refresh
     Scenic.database.refresh_materialized_view(table_name, concurrently: true, cascade: false)
   end
 
diff --git a/db/migrate/20230602123133_add_index_to_conversation_with_labels_view.rb b/db/migrate/20230602123133_add_index_to_conversation_with_labels_view.rb
index 49aa33d28..4d476dd67 100644
--- a/db/migrate/20230602123133_add_index_to_conversation_with_labels_view.rb
+++ b/db/migrate/20230602123133_add_index_to_conversation_with_labels_view.rb
@@ -2,6 +2,7 @@ class AddIndexToConversationWithLabelsView < ActiveRecord::Migration[7.0]
   disable_ddl_transaction!
 
   def change
+    # needs atleast one unuque index for concurrent refresh
     add_index :conversation_with_labels, :id, unique: true, algorithm: :concurrently
     add_index :conversation_with_labels, :account_id, algorithm: :concurrently
     add_index :conversation_with_labels, :status, algorithm: :concurrently