[WordPress database error] [Nextgen Gallery]

I have created the following function

function nggfirstImage()
	{
	   global $wpdb;
	   $firstImage = $wpdb->get_var("SELECT pid FROM $wpdb->wp_ngg_pictures WHERE galleryid=1 AND sortorder=1");
	   	echo $firstImage;

}

But I get the following error..

[You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘WHERE galleryid=1 AND sortorder=1’ at line 1]
SELECT pid FROM WHERE galleryid=’1′ AND sortorder=’1′

Any ideas??

cheers
4nt0n