diff --git a/README.md b/README.md
index 9a9ef0f0..675727e1 100644
--- a/README.md
+++ b/README.md
@@ -215,26 +215,25 @@ instance is stopped.
 
     `cd redmine`
 
-3. Install dependencies: 
+4. Install dependencies: 
 
     `bundle install`
-
-4. Initialize/Update database:
+5. Initialize/Update database:
 
     `RAILS_ENV=production bundle exec rake redmine:plugins:migrate NAME=redmine_dmsf`
 
-5. The access rights must be set for web server, e.g.: 
+6. The access rights must be set for web server, e.g.: 
 
     `chown -R www-data:www-data plugins/redmine_dmsf`.
 
-6. Restart the web server, e.g.: 
+7. Restart the web server, e.g.: 
 
     `systemctl restart apache2`
 
-7. You should configure the plugin via Redmine interface: Administration -> Plugins -> DMSF -> Configure. (You should check and then save the plugin's configuration after each upgrade.)
-8. Don't forget to grant permissions for DMSF in Administration -> Roles and permissions
-9. Assign DMSF permissions to appropriate roles.
-10. There are a few rake tasks:
+8. You should configure the plugin via Redmine interface: Administration -> Plugins -> DMSF -> Configure. (You should check and then save the plugin's configuration after each upgrade.)
+9. Don't forget to grant permissions for DMSF in Administration -> Roles and permissions
+10. Assign DMSF permissions to appropriate roles.
+11. There are a few rake tasks:
 
     I) To convert documents from the standard Redmine document module
 
diff --git a/app/views/dmsf_files/_version_selector.html.erb b/app/views/dmsf_files/_version_selector.html.erb
index 9d6fd65c..540a67d1 100644
--- a/app/views/dmsf_files/_version_selector.html.erb
+++ b/app/views/dmsf_files/_version_selector.html.erb
@@ -26,12 +26,12 @@
 <%= select_tag select_tag_name_major, options_for_select(DmsfUploadHelper::major_version_select_options,
       DmsfUploadHelper::gui_version(revision_or_upload.major_version)),
       class: 'dmsf-select-version' %>
-<bold>.</bold>
+<b>.</b>
 <% if revision_or_upload.patch_version.present? && (DmsfUploadHelper::gui_version(revision_or_upload.patch_version) != ' ') %>
   <%= select_tag select_tag_name_minor, options_for_select(DmsfUploadHelper::minor_version_select_options,
         DmsfUploadHelper::gui_version(revision_or_upload.minor_version)),
         class: 'dmsf-select-version' %>
-  <bold>.</bold>
+  <b>.</b>
   <%= select_tag select_tag_name_patch, options_for_select(DmsfUploadHelper::patch_version_select_options,
         DmsfUploadHelper::gui_version(DmsfUploadHelper.increase_version(revision_or_upload.patch_version))),
         class: 'dmsf-select-version' %>
@@ -44,7 +44,7 @@
   <%= select_tag select_tag_name_minor,
         options_for_select(DmsfUploadHelper::minor_version_select_options, minor_version),
         class: 'dmsf-select-version' %>
-  <bold>.</bold>
+  <b>.</b>
   <%= select_tag select_tag_name_patch, options_for_select(DmsfUploadHelper::patch_version_select_options,
     [h('&nbsp;'), '']), class: 'dmsf-select-version' %>
 <% end %>
diff --git a/assets/javascripts/attachments_dmsf.js b/assets/javascripts/attachments_dmsf.js
index 42f90733..e4e30cdb 100644
--- a/assets/javascripts/attachments_dmsf.js
+++ b/assets/javascripts/attachments_dmsf.js
@@ -52,7 +52,7 @@ function dmsfAddFile(inputEl, file, eagerUpload) {
     let attachments = $('#dmsf_attachments_fields');
     let max = ($(inputEl).attr('multiple') == 'multiple') ? 10 : 1
 
-    if (attachments.children().length < max) {
+    if (attachments.children.length < max) {
 
         let attachmentId = dmsfAddFile.nextAttachmentId++;
         let fileSpan = $('<span>', { id: 'dmsf_attachments_' + attachmentId, 'class': 'attachment' });
diff --git a/assets/javascripts/redmine_dmsf.js b/assets/javascripts/redmine_dmsf.js
index 6e814cd6..214e848a 100644
--- a/assets/javascripts/redmine_dmsf.js
+++ b/assets/javascripts/redmine_dmsf.js
@@ -57,7 +57,7 @@ function dmsfToggle(el, project_id, folder_id, url)
       if (expand) {
 
         // Display only children with expanded parent
-        m = $(tr).attr('class').match(/(\d+(p|f)) idnt/);
+        let m = $(tr).attr('class').match(/(\d+(p|f)) idnt/);
 
         if(m){
 
diff --git a/assets/stylesheets/easy_extensions.css b/assets/stylesheets/easy_extensions.css
index 476a485e..1f46f8d2 100644
--- a/assets/stylesheets/easy_extensions.css
+++ b/assets/stylesheets/easy_extensions.css
@@ -54,16 +54,16 @@ table.dmsf a.sort.asc.icon.icon-sorted-desc {
 
 .dmsf-tree.dmsf-expanded span.dmsf-expander {
     background: none !important;
-    padding-left: 0px !important;
+    padding-left: 0 !important;
 }
 
 .dmsf-tree.dmsf-collapsed span.dmsf-expander {
     background: none !important;
-    padding-left: 0px !important;
+    padding-left: 0 !important;
 }
 
 table.dmsf td.dmsf-title {
-    padding-left: 0px;
+    padding-left: 0;
 }
 
 td.dmsf-title a.icon::before {
@@ -130,9 +130,9 @@ td.dmsf-title a.icon-folder::before {
 }
 
 #sidebar ul > li > a.icon-only.icon-clear-query {
-    font-size: 0px;
+    font-size: 0;
     display: inline-block;
     overflow: hidden;
-    width: 0px;
+    width: 0;
     height: 16px;
 }
diff --git a/test/functional/dmsf_files_controller_test.rb b/test/functional/dmsf_files_controller_test.rb
index 88cd0f32..ea154bcb 100644
--- a/test/functional/dmsf_files_controller_test.rb
+++ b/test/functional/dmsf_files_controller_test.rb
@@ -126,7 +126,7 @@ class DmsfFilesControllerTest < RedmineDmsf::Test::TestCase
         params: {
           id: @file1.id,
           version_major: @file1.last_revision.major_version,
-          version_major: @file1.last_revision.minor_version + 1,
+          version_minor: @file1.last_revision.minor_version + 1,
           dmsf_file_revision: {
             title: @file1.last_revision.title,
             name: @file1.last_revision.name,