diff --git a/lib/redmine/wiki_formatting/html_sanitizer.rb b/lib/redmine/wiki_formatting/html_sanitizer.rb
index bd84ff4f6..05e5ffd55 100644
--- a/lib/redmine/wiki_formatting/html_sanitizer.rb
+++ b/lib/redmine/wiki_formatting/html_sanitizer.rb
@@ -21,10 +21,11 @@ module Redmine
   module WikiFormatting
     # Combination of SanitizationFilter and ExternalLinksFilter
     class HtmlSanitizer
-      Pipeline = HTML::Pipeline.new([
-        Redmine::WikiFormatting::CommonMark::SanitizationFilter,
-        Redmine::WikiFormatting::CommonMark::ExternalLinksFilter,
-      ], {})
+      Pipeline = HTML::Pipeline.new(
+        [
+          Redmine::WikiFormatting::CommonMark::SanitizationFilter,
+          Redmine::WikiFormatting::CommonMark::ExternalLinksFilter,
+        ], {})
 
       def self.call(html)
         result = Pipeline.call html