diff --git a/app/models/my_module_repository_row.rb b/app/models/my_module_repository_row.rb
index f0e23559d..b5c87762f 100644
--- a/app/models/my_module_repository_row.rb
+++ b/app/models/my_module_repository_row.rb
@@ -15,9 +15,10 @@ class MyModuleRepositoryRow < ApplicationRecord
 
   validates :repository_row, uniqueness: { scope: :my_module }
 
-  before_save :nulify_stock_consumption, if: :stock_consumption_changed?
   around_save :deduct_stock_balance, if: :stock_consumption_changed?
 
+  before_save :nulify_stock_consumption, if: :stock_consumption_changed?
+
   def consume_stock(user, stock_consumption, comment = nil)
     ActiveRecord::Base.transaction(requires_new: true) do
       lock!
@@ -40,10 +41,11 @@ class MyModuleRepositoryRow < ApplicationRecord
 
   def deduct_stock_balance
     stock_value = repository_row.repository_stock_value
-    stock_value.lock!
     delta = stock_consumption.to_d - stock_consumption_was.to_d
+    stock_value.lock!
     stock_value.amount = stock_value.amount - delta
     yield
+    stock_value.save!
     stock_value.repository_ledger_records.create!(
       reference: self,
       user: last_modified_by,
@@ -51,7 +53,6 @@ class MyModuleRepositoryRow < ApplicationRecord
       balance: stock_value.amount,
       comment: comment
     )
-    stock_value.save!
     save!
   end
 end