diff --git a/lib/redmine/wiki_formatting/html_parser.rb b/lib/redmine/wiki_formatting/html_parser.rb
index 62445ff3b..1a268e4a0 100644
--- a/lib/redmine/wiki_formatting/html_parser.rb
+++ b/lib/redmine/wiki_formatting/html_parser.rb
@@ -36,7 +36,7 @@ module Redmine
         doc.scrub!(WikiTags.new(tags))
         doc.scrub!(:newline_block_elements)
     
-        Loofah::Helpers.remove_extraneous_whitespace(doc.text).strip
+        Loofah.remove_extraneous_whitespace(doc.text).strip
       end
 
       class WikiTags < ::Loofah::Scrubber