My sticky post is not sticky

Hello,

The sticky checkbox works fine, I can see my post is a sticky post in the BO.
But in my front the sticky post is not in the first position.

My code :

$args_query = array(
‘post_type’ => array(‘project’),
‘order’ => ‘DESC’,
‘posts_per_page’ => 4,
);

Did I miss something ?

Thank you !