diff --git a/lib/tasks/detect_sites.rake b/lib/tasks/detect_sites.rake
index 1153519..75ec0b0 100644
--- a/lib/tasks/detect_sites.rake
+++ b/lib/tasks/detect_sites.rake
@@ -65,7 +65,8 @@ namespace :create_site do
                 end
                 server_name = server_name_list.join(' ')
                 nginx_file_content = exec_ssh_command_by_sudo_and_see_output(ssh,"cat #{nginx_file}",false,true)
-                site_path = Pathname.new(exec_ssh_command_by_sudo_and_see_output(ssh,"echo `grep root #{nginx_file} | grep -v -e '#.*root'`",false,true).to_s.split("\n").first.to_s.strip.split(";").select{|s| s.present? && s.include?("root")}.first.split("root").last.to_s.strip).dirname.to_s
+                site_path = Pathname.new(exec_ssh_command_by_sudo_and_see_output(ssh,"echo `grep root #{nginx_file} | grep -v -e '#.*root'`",false,true).to_s.split("\n").first.to_s.strip.split(";").select{|s| s.present? && s.include?("root")}.first.split("root").last.to_s.strip).dirname.to_s rescue nil
+                next if site_path.nil?
                 if site_path.present? && exec_ssh_command_by_sudo(ssh,"ls #{site_path}").split.length != 0 &&  exec_ssh_command_by_sudo(ssh,"ls #{site_path}/Gemfile").include?("No such file or directory")
                   SiteConstruct.where(:server_type => @site_server.server_name , :domain_name=>server_name).destroy
                   next