diff --git a/app/helpers/content_viewer_helper.rb b/app/helpers/content_viewer_helper.rb
index 1cc3afa..524aa53 100644
--- a/app/helpers/content_viewer_helper.rb
+++ b/app/helpers/content_viewer_helper.rb
@@ -55,7 +55,7 @@ module ContentViewerHelper
     "http://www.facebook.com/sharer.php?s=100&p[title]=%{title}&p[summary]=%{summary}&p[url]=%{url}&p[images][0]=%{image}" % {
       :title => CGI.escape(article.title),
       :url => CGI.escape(url_for(article.url)),
-      :summary => CGI.escape(truncate(strip_tags(article.body.to_s), 300)),
+      :summary => CGI.escape(truncate(strip_tags(article.body.to_s), :length => 300)),
       :image => CGI.escape(article.body_images_paths.first.to_s)
     }
   end
--
libgit2 0.21.2