diff --git a/app/models/repertoire.rb b/app/models/repertoire.rb
index 995d52d0b..5c37eb3b6 100644
--- a/app/models/repertoire.rb
+++ b/app/models/repertoire.rb
@@ -1,6 +1,6 @@
 class Repertoire < ApplicationRecord
   default_scope :order => 'updated_at desc'
-  has_many :sub_repertoires, ->{order("sub_repertoires.updated_at desc")}, :dependent => :destroy
+  has_many :sub_repertoires, ->{order(updated_at: :desc)}, :dependent => :destroy
 
   has_many :tag_repertoires, through: :sub_repertoires
 end
diff --git a/app/models/sub_repertoire.rb b/app/models/sub_repertoire.rb
index 9f7079cfc..d6a6c1b3d 100644
--- a/app/models/sub_repertoire.rb
+++ b/app/models/sub_repertoire.rb
@@ -1,5 +1,5 @@
 class SubRepertoire < ApplicationRecord
 	belongs_to :repertoire
-	has_many :tag_repertoires, ->{order("tag_repertoires.updated_at desc")} ,:dependent => :destroy
+	has_many :tag_repertoires, ->{order(updated_at: :desc)} ,:dependent => :destroy
 
 end