parent::__construct still generates error The called constructor method for WP_W

Hello,

I have folowing code in functions.php:

class XXXXXXX extends WP_Widget {

function __construct() {
parent::__construct(
'XXXXXX',
'Blog categories',
array( 'description' => 'This widget displays blog categories in 2 columns', )
);
}
...
}

but still I see folowing error:

The called constructor method for WP_Widget is deprecated since version 4.3.0! Use __construct() instead.