How to fix double permalink

[tablain]

Hi,

 

Few days before i manage to redirect my site from http://www.site.com to htpp://site.com through Cpanel, also ensure to keep wildcard redirect.

 

But now i notice some weird issue, When i type http://site.com/37-product it shows me same link after enter but if i type or redirect from any other website this : http://www.site.com/37-product then it shows link : http://site.com/category.php?id_category=37

 

I am worried due to this Google will index double link and may reduce my ranking.

 

Please suggest us how can we fix this and how badly this can affect our site if the same continue .

 

Thanks

[tablain]

Surprisingly nobody wish to reply,

[Presta Ecommerce]

One way of fixing is to include canonical links that will tell google (and other search engines) what page is main.