diff --git a/lib/tasks/change_site_server_name.rake b/lib/tasks/change_site_server_name.rake
index fc0a40a..e6631ce 100644
--- a/lib/tasks/change_site_server_name.rake
+++ b/lib/tasks/change_site_server_name.rake
@@ -10,7 +10,7 @@ namespace :create_site do
         @password = site_server.password
         Net::SSH.start(site_server.ip , site_server.account , password: site_server.password) do |ssh|
           nginx_file_content = exec_command_by_user(ssh,"cat #{site_construct.nginx_file}")
-          nginx_file_content = nginx_file_content.gsub(/^[ \t]*server_name[ \t]+.*;/,"  server_name #{args.server_name};").gsub('$','\$')
+          nginx_file_content = nginx_file_content.gsub(/^[ \t]*server_name[ \t]+.*;/,"  server_name #{args.server_name};")
           puts nginx_file_content
           cmd = "x='#{nginx_file_content}'; echo '#{@password}' | sudo -S sh -c \"echo '$x' > #{site_construct.nginx_file}\""
           exec_command_by_user(ssh,cmd)