Removing ?q=page.html

Hey, I noticed that every redirect link will add ?q=page.html to every link I’m redirecting on. For example if I want to redirect someone from /goto/test.html page to http://domain.com/page.html?a=a&b=b, it will redirect to http://domain.com/page.html?a=a&b=b?q=test.html I was wondering how can I remove this, since it breaks the final link.

http://ww.wp.xz.cn/plugins/quick-pagepost-redirect-plugin/