Publicize – wrong permalink published on Facebook

Dear developer, My permalink structure is address.com/post-title When I create a post and publicize it on Facebook, the link displayed there is address.com/2013/01/05/post-title/?fb_source=pubv1 When user clicks this link on Facebook it directs to 404 page on my site. How to change/update permalink that is being sent to Facebok so the address is correct? Best regards