diff --git a/app/models/project.rb b/app/models/project.rb
index 4d292fe..6933baf 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -86,7 +86,7 @@ class Project
       pd_data = []
       fields_to_show.collect do |t|
         if t == "project_title"
-          pd_data << { "data_title" => "<a href='#{OrbitHelper.url_to_plugin_show(p.to_param,'personal_project')}' target='_blank'>#{p.send(t)}" }
+          pd_data << { "data_title" => "<a href=\"#{OrbitHelper.url_to_plugin_show(p.to_param,'personal_project')}\" target='_blank'>#{p.send(t)}</a>" }
         elsif t == "period"
           date = p.duration
           pd_data << { "data_title" => date }
@@ -134,18 +134,18 @@ class Project
       self.project_files.each do |project_file|  
         url = project_file.file.url
         title = ((project_file.title.blank? ? File.basename(project_file.file.path) : project_file.title) rescue "")
-        files << (url.nil? ? "" : "<li><a href='#{url}'' target='_blank'>#{title}</li>")
+        files << (url.nil? ? "" : "<li><a href=\"#{url}\" target='_blank'>#{title}</a></li>")
       end
       value = files.join("")
     when "url"
-      value = self.url.to_s.blank? ? "" : "<a href='#{self.url}'>#{self.url}</a>"
+      value = self.url.to_s.blank? ? "" : "<a href=\"#{self.url}\">#{self.url}</a>"
     when "participator"
       value = get_authors_show(self)
     else
       value = self.send(field) rescue ""
     end
 
-    value = (value =~ /\A#{URI::regexp(['http', 'https'])}\z/) ? "<a href='#{value}' target='blank'>#{value}</a>" : value
+    value = (value =~ /\A#{URI::regexp(['http', 'https'])}\z/) ? "<a href=\"#{value}\" target='blank'>#{value}</a>" : value
     
     {
       "key"=>field,