Unity 5.4 Button auto-clicks

When I create a button in unity 5.4 the button just clicks automatic when i press play in the editor. I haven't been using unity before, so I can't say if it would happen in other versions. My project is in the android platform, and it's 2D.

First i create a script, then I attatch it to a empty gameobject. Then I press the little + sign on the OnClick() in the button properties, so I can add the gameobject with the script attached.

I have screenshots of button properties, EventSystem, Canvas, gameobject and the Script.

If anyone know what i have done wrong, please let me know. Thanks in advance.