Tweaked my expires headers

I’m adding this to my .htaccess file at the moment:

# Enable expirations
ExpiresActive On 
# Default directive
ExpiresDefault "access plus 1 month"
# Favicon
ExpiresByType image/x-icon "access plus 1 year"
# Images
ExpiresByType image/gif "access plus 1 year"
ExpiresByType image/png "access plus 1 year"
ExpiresByType image/jpg "access plus 1 year"
ExpiresByType image/jpeg "access plus 1 year"
# PDF
ExpiresByType application/pdf "access plus 1 year"
# CSS
# ExpiresByType text/css "access plus 1 month"
# Javascript
ExpiresByType application/javascript "access plus 1 year"