How to make vbulletin not detect HTTPS URLs and not prefix it https automatically?

[postcd]

Hello,

my vbulletin 4.2.x site is using https by default and for future accessibility i would like to use HTTP in all links in the posts.

When i, composing some post and pasting some internal forum url (to another topic for example), the vbulletin detects https in url and add https prefix, which i do NOT want. and it bothers me to countlessly change to http. Any way to stop vbulletin detecting whether pasted URL is https?

Thank you alot