diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0e258735..2207df23 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,13 @@
 Changelog for Redmine DMSF
 ==========================
 
+4.2.2 *2025-07-23*
+------------------
+
+    Missing lock icons
+
+* Bug: #3 - Missing lock icons by locked objects
+
 4.2.1 *2025-07-10*
 ------------------
 
diff --git a/README.md b/README.md
index a89876e4..3106811d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Redmine DMSF Plugin 4.2.1
+# Redmine DMSF Plugin 4.2.2
 
 [![GitHub CI](https://github.com/picman/redmine_dmsf/actions/workflows/rubyonrails.yml/badge.svg?branch=master)](https://github.com/picman/redmine_dmsf/actions/workflows/rubyonrails.yml)
 [![Support Ukraine Badge](https://bit.ly/support-ukraine-now)](https://github.com/support-ukraine/support-ukraine)
diff --git a/app/helpers/dmsf_queries_helper.rb b/app/helpers/dmsf_queries_helper.rb
index 5332f3da..c5066758 100644
--- a/app/helpers/dmsf_queries_helper.rb
+++ b/app/helpers/dmsf_queries_helper.rb
@@ -30,7 +30,7 @@ module DmsfQueriesHelper
       case item.type
       when 'file'
         file = DmsfFile.find_by(id: item.id)
-        if !item.deleted && file&.locked?
+        if !item.deleted? && file&.locked?
           return content_tag(:span, val) +
                  link_to(sprite_icon('unlock', nil, icon_only: true, size: '12'),
                          unlock_dmsf_files_path(id: file,
@@ -40,7 +40,7 @@ module DmsfQueriesHelper
         end
       when 'folder'
         folder = DmsfFolder.find_by(id: item.id)
-        if !item.deleted && folder&.locked?
+        if !item.deleted? && folder&.locked?
           return content_tag(:span, val) +
                  link_to(sprite_icon('unlock', nil, icon_only: true, size: '12'),
                          unlock_dmsf_path(id: folder.project,
@@ -54,37 +54,37 @@ module DmsfQueriesHelper
     when :id
       case item.type
       when 'file'
-        if item&.deleted&.positive?
+        if item.deleted?
           h(value)
         else
           link_to h(value), dmsf_file_path(id: item.id)
         end
       when 'file-link'
-        if item&.deleted&.positive?
+        if item.deleted?
           h(item.revision_id)
         else
           link_to h(item.revision_id), dmsf_file_path(id: item.revision_id)
         end
       when 'folder'
         if item.id
-          if item&.deleted&.positive?
+          if item.deleted?
             h(value)
           else
             link_to h(value), edit_dmsf_path(id: item.project_id, folder_id: item.id)
           end
-        elsif item&.deleted&.positive?
+        elsif item.deleted?
           h(item.project_id)
         else
           link_to h(item.project_id), edit_root_dmsf_path(id: item.project_id)
         end
       when 'folder-link'
         if item.id
-          if item&.deleted&.positive?
+          if item.deleted?
             h(item.revision_id)
           else
             link_to h(item.revision_id), edit_dmsf_path(id: item.project_id, folder_id: item.revision_id)
           end
-        elsif item&.deleted&.positive?
+        elsif item.deleted?
           h(item.project_id)
         else
           link_to h(item.project_id), edit_root_dmsf_path(id: item.project_id)
diff --git a/app/models/dmsf_query.rb b/app/models/dmsf_query.rb
index 972e2142..dea55d78 100644
--- a/app/models/dmsf_query.rb
+++ b/app/models/dmsf_query.rb
@@ -26,7 +26,7 @@ class DmsfQuery < Query
 
   # Standard columns
   self.available_columns = [
-    QueryColumn.new(:id, sortable: 'id', caption: +'#'),
+    QueryColumn.new(:id, sortable: 'id', caption: :label_column_id),
     DmsfQueryTitleColumn.new(:title, sortable: 'title', frozen: true, caption: :label_column_title),
     QueryColumn.new(:size, sortable: 'size', caption: :label_column_size),
     DmsfQueryModifiedColumn.new(:modified, sortable: 'updated', caption: :label_column_modified),
diff --git a/init.rb b/init.rb
index d800df49..2d12e050 100644
--- a/init.rb
+++ b/init.rb
@@ -27,7 +27,7 @@ Redmine::Plugin.register :redmine_dmsf do
   author_url 'https://github.com/picman/redmine_dmsf/graphs/contributors'
   author 'Vít Jonáš / Daniel Munn / Karel Pičman'
   description 'Document Management System Features'
-  version '4.2.1'
+  version '4.2.2'
 
   requires_redmine version_or_higher: '6.0.0'
 
diff --git a/test/functional/dmsf_controller_test.rb b/test/functional/dmsf_controller_test.rb
index 00ed5287..f215d93a 100644
--- a/test/functional/dmsf_controller_test.rb
+++ b/test/functional/dmsf_controller_test.rb
@@ -290,6 +290,14 @@ class DmsfControllerTest < RedmineDmsf::Test::TestCase
     assert @response.media_type.include?('text/csv')
   end
 
+  def test_show_locked
+    post '/login', params: { username: 'jsmith', password: 'jsmith' }
+    get "/projects/#{@project2.id}/dmsf"
+    assert_response :success
+    # An unlock icon next to a locked file
+    assert_select 'a.icon-unlock', count: 1
+  end
+
   def test_show_folder_doesnt_correspond_the_project
     post '/login', params: { username: 'jsmith', password: 'jsmith' }
     assert @project1 != @folder3.project