diff --git a/app/services/repository_datatable_service.rb b/app/services/repository_datatable_service.rb
index dc4a834b1..ac47b2365 100644
--- a/app/services/repository_datatable_service.rb
+++ b/app/services/repository_datatable_service.rb
@@ -57,7 +57,7 @@ class RepositoryDatatableService
                                          .where(my_module_repository_rows: { my_module_id: @my_module })
         if @repository.has_stock_management?
           repository_rows = repository_rows
-                            .select('SUM(my_module_repository_rows.stock_consumption) AS "consumed_stock"')
+                            .select('SUM(DISTINCT my_module_repository_rows.stock_consumption) AS "consumed_stock"')
         end
       else
         repository_rows = repository_rows