"Insecure Favicon" is causing mixed content on secure pages

[mc12345678]

Ok, these are the only instances where favicon shows up, and the files they are in:

includes/languages/english/winchester_black/meta_tags.php (this is the template I'm using)

Line #64 : // favicon setting 

Line #66 : // define('FAVICON','');

includes/templates/template_default/common/html_header.php

Line #34 : <?php if (defined('FAVICON')) { ?> 

Line #35 : <link rel="icon" href="<?php echo FAVICON; ?>" type="image/x-icon" /> 

Line #36 : <link rel="shortcut icon" href="<?php echo FAVICON; ?>" type="image/x-icon" /> 

Line #37 : <?php } //endif FAVICON ?>

includes/templates/winchester_black/common/html_header.php (this is the template I'm using)

Line #56 : <?php if (defined('FAVICON')) { ?> 

Line #57 : <link rel="icon" href="<?php echo FAVICON; ?>" type="image/x-icon" /> 

Line #58 : <link rel="shortcut icon" href="<?php echo FAVICON; ?>" type="image/x-icon" /> 

Line #59 : <?php } //endif FAVICON ?>

If that's the case then either FAVICON is defined in the database or it's not FAVICON that is being displayed. Based on the above code, FAVICON is never defined and therefore the sub-code in the if statement is never run if all has been provided.