diff --git a/db/migrate/20211126142105_user_case_logs_belong_to_organisation.rb b/db/migrate/20211126142105_user_case_logs_belong_to_organisation.rb
index d689910bf..d889d8db9 100644
--- a/db/migrate/20211126142105_user_case_logs_belong_to_organisation.rb
+++ b/db/migrate/20211126142105_user_case_logs_belong_to_organisation.rb
@@ -5,8 +5,8 @@ class UserCaseLogsBelongToOrganisation < ActiveRecord::Migration[6.1]
       t.belongs_to :organisation
     end
     change_table :case_logs, bulk: true do |t|
-      t.belongs_to :owning_organisation, class_name: "Organisation"
-      t.belongs_to :managing_organisation, class_name: "Organisation"
+      t.belongs_to :owning_organisation
+      t.belongs_to :managing_organisation
     end
   end
 
diff --git a/db/migrate/20220323094418_create_data_protection_confirmation.rb b/db/migrate/20220323094418_create_data_protection_confirmation.rb
index 4223022c2..a0d0d2436 100644
--- a/db/migrate/20220323094418_create_data_protection_confirmation.rb
+++ b/db/migrate/20220323094418_create_data_protection_confirmation.rb
@@ -2,7 +2,7 @@ class CreateDataProtectionConfirmation < ActiveRecord::Migration[7.0]
   def change
     create_table :data_protection_confirmations do |t|
       t.belongs_to :organisation
-      t.belongs_to :data_protection_officer, class_name: "User", index: { name: :dpo_user_id }
+      t.belongs_to :data_protection_officer, index: { name: :dpo_user_id }
       t.column :confirmed, :boolean
       t.column :old_id, :string
       t.column :old_org_id, :string
diff --git a/db/migrate/20220427160536_add_created_by_to_case_logs.rb b/db/migrate/20220427160536_add_created_by_to_case_logs.rb
index 557f17a1a..4d5928176 100644
--- a/db/migrate/20220427160536_add_created_by_to_case_logs.rb
+++ b/db/migrate/20220427160536_add_created_by_to_case_logs.rb
@@ -1,7 +1,7 @@
 class AddCreatedByToCaseLogs < ActiveRecord::Migration[7.0]
   def change
     change_table :case_logs, bulk: true do |t|
-      t.belongs_to :created_by, class_name: "User"
+      t.belongs_to :created_by
     end
   end
 end
diff --git a/db/migrate/20220826093411_add_sales_log.rb b/db/migrate/20220826093411_add_sales_log.rb
index 8b14d7f5b..eddea3ad5 100644
--- a/db/migrate/20220826093411_add_sales_log.rb
+++ b/db/migrate/20220826093411_add_sales_log.rb
@@ -4,9 +4,9 @@ class AddSalesLog < ActiveRecord::Migration[7.0]
       t.integer :status, default: 0
       t.datetime :saledate
       t.timestamps
-      t.references :owning_organisation, class_name: "Organisation", foreign_key: { to_table: :organisations, on_delete: :cascade }
-      t.references :managing_organisation, class_name: "Organisation"
-      t.references :created_by, class_name: "User"
+      t.references :owning_organisation, foreign_key: { to_table: :organisations, on_delete: :cascade }
+      t.references :managing_organisation
+      t.references :created_by
     end
   end
 end
diff --git a/db/migrate/20221207141947_add_updated_by_to_logs.rb b/db/migrate/20221207141947_add_updated_by_to_logs.rb
index 9bc80c526..a97ea9e7d 100644
--- a/db/migrate/20221207141947_add_updated_by_to_logs.rb
+++ b/db/migrate/20221207141947_add_updated_by_to_logs.rb
@@ -1,10 +1,10 @@
 class AddUpdatedByToLogs < ActiveRecord::Migration[7.0]
   def change
     change_table :lettings_logs, bulk: true do |t|
-      t.belongs_to :updated_by, class_name: "User"
+      t.belongs_to :updated_by
     end
     change_table :sales_logs, bulk: true do |t|
-      t.belongs_to :updated_by, class_name: "User"
+      t.belongs_to :updated_by
     end
   end
 end
diff --git a/db/migrate/20230530094653_add_data_sharing_agreement.rb b/db/migrate/20230530094653_add_data_sharing_agreement.rb
index a148b32cc..a65aa279c 100644
--- a/db/migrate/20230530094653_add_data_sharing_agreement.rb
+++ b/db/migrate/20230530094653_add_data_sharing_agreement.rb
@@ -2,7 +2,7 @@ class AddDataSharingAgreement < ActiveRecord::Migration[7.0]
   def change
     create_table :data_sharing_agreements do |t|
       t.belongs_to :organisation
-      t.belongs_to :data_protection_officer, class_name: "User"
+      t.belongs_to :data_protection_officer
 
       t.datetime :signed_at, null: false
       t.string :organisation_name, null: false
diff --git a/db/migrate/20231121131725_add_sales_managing_organisation.rb b/db/migrate/20231121131725_add_sales_managing_organisation.rb
index f4085414a..a77b75c79 100644
--- a/db/migrate/20231121131725_add_sales_managing_organisation.rb
+++ b/db/migrate/20231121131725_add_sales_managing_organisation.rb
@@ -1,7 +1,7 @@
 class AddSalesManagingOrganisation < ActiveRecord::Migration[7.0]
   def change
     change_table :sales_logs, bulk: true do |t|
-      t.references :managing_organisation, class_name: "Organisation"
+      t.references :managing_organisation
     end
   end
 end
diff --git a/db/migrate/20240408102550_add_created_by.rb b/db/migrate/20240408102550_add_created_by.rb
index b47e382a5..b7fc65674 100644
--- a/db/migrate/20240408102550_add_created_by.rb
+++ b/db/migrate/20240408102550_add_created_by.rb
@@ -1,11 +1,11 @@
 class AddCreatedBy < ActiveRecord::Migration[7.0]
   def change
     change_table :sales_logs do |t|
-      t.references :created_by, class_name: "User"
+      t.references :created_by
     end
 
     change_table :lettings_logs do |t|
-      t.references :created_by, class_name: "User"
+      t.references :created_by
     end
   end
 end