diff --git a/db/migrate/20230727071343_fix_duplicated_checklists_positions.rb b/db/migrate/20230727071343_fix_duplicated_checklists_positions.rb
new file mode 100644
index 000000000..75089ab0c
--- /dev/null
+++ b/db/migrate/20230727071343_fix_duplicated_checklists_positions.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+class FixDuplicatedChecklistsPositions < ActiveRecord::Migration[7.0]
+  def up
+    ActiveRecord::Base.no_touching do
+      checklists = Checklist.where(id: ChecklistItem.select(:checklist_id)
+                                                    .group(:checklist_id, :position)
+                                                    .having('COUNT(*) > 1').distinct)
+
+      ChecklistItem.acts_as_list_no_update do
+        checklists.find_each do |checklist|
+          checklist.checklist_items.each.with_index do |checklist_item, index|
+            checklist_item.position = index
+            checklist_item.save!(validate: false)
+          end
+        end
+      end
+    end
+  end
+
+  def down
+    raise ActiveRecord::IrreversibleMigration
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index be3be339f..184a209eb 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_09_04_080206) do
+ActiveRecord::Schema[7.0].define(version: 2023_10_03_114337) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "btree_gist"
   enable_extension "pg_trgm"
@@ -925,8 +925,9 @@ ActiveRecord::Schema[7.0].define(version: 2023_09_04_080206) do
   create_table "result_texts", force: :cascade do |t|
     t.string "text"
     t.bigint "result_id", null: false
-    t.string "name", default: ""
+    t.string "name"
     t.index "trim_html_tags((text)::text) gin_trgm_ops", name: "index_result_texts_on_text", using: :gin
+    t.index ["name"], name: "index_result_texts_on_name", opclass: :gist_trgm_ops, using: :gist
     t.index ["result_id"], name: "index_result_texts_on_result_id"
   end
 
@@ -1004,8 +1005,9 @@ ActiveRecord::Schema[7.0].define(version: 2023_09_04_080206) do
     t.string "text"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.string "name", default: ""
+    t.string "name"
     t.index "trim_html_tags((text)::text) gin_trgm_ops", name: "index_step_texts_on_text", using: :gin
+    t.index ["name"], name: "index_step_texts_on_name", opclass: :gist_trgm_ops, using: :gist
     t.index ["step_id"], name: "index_step_texts_on_step_id"
   end