diff --git a/lib/vagrant/guest/freebsd.rb b/lib/vagrant/guest/freebsd.rb
index 544386f9a..e6e933326 100644
--- a/lib/vagrant/guest/freebsd.rb
+++ b/lib/vagrant/guest/freebsd.rb
@@ -73,7 +73,7 @@ module Vagrant
 
      def change_host_name(name)
        if !vm.channel.test("hostname -f | grep '^#{name}$' || hostname -s | grep '^#{name}$'")
-         vm.channel.sudo("sed -i '' 's/hostname=.*$/hostname=#{name}/' /etc/rc.conf")
+         vm.channel.sudo("sed -i '' 's/^hostname=.*$/hostname=#{name}/' /etc/rc.conf")
          vm.channel.sudo("hostname #{name}")
        end
      end