shared memory zone "media" conflicts with already declared size 0

[Tomasz Pajor]

>
>> what seems to be the problem?
>>
>> [emerg]: the size 52428800 of shared memory zone "media" conflicts with 
>> already declared size 0 in /etc/nginx/conf.d/cache.conf:5
>> configuration file /etc/nginx/nginx.conf test failed
>>     
>
> This may be caused if "proxy_cache media" is included before proxy_cache_path.
>   
this is true,
in /etc/nginx/conf.d i have two files, cache.conf and ssl.conf, and what 
it seems the ssl.conf is loaded first, shouldn't the files be loaded in 
alphabetical order?