Browser (or node ?) adding parameters automatically to http request

I have a node.js server with express.js and everything has been working well so far, but suddenly I have this very strange bug :

My request to the domain base URL that means in my browser I typed

http://localhost:9191/

appear in express to have the url parameters /index/hud.html which by the way have never been used anywhere in my code as I don't have any "index" folder. I don't even have html files because I use jade. This URL is not totally unknown of me (from old code, elsewhere), but is nowhere mentionned in this server. I have made numerous search accross all files to check this.

So here is what happens :

• I tried making a request handler for '*' so I could know what was going on :

The handler

   this.app.get('*', function (req, res) {
   console.log(req);
   });

The req object (part of) :

route: {    
    path: '*',
    method: 'get',
    callbacks: [ [Function] ],
    keys: [],
    regexp: /^(.*)\/?$/i,
    params: [ '/index/hud.html' ]
},
params: [ '/index/hud.html' ] }

Which means that my browser somehow wants to get something that is not the URL I typed, or maybe express modified the request ?

• Then I made a handler for this url. My first guess was to redirect it to '/' but it made an infinite loop (which means that for my server '/index/hud.html' is the same as '/'. Please note at this point that I searched and researched in every file, there is no mention of such path anywhere in the code.

• The request catched from '/index/hud.html' is a little bit different than the one catched from '/'

The handler :

this.app.get('/index/hud.html', function (req, res)
{
    console.log(req);
});

The request :

route: 
{
    path: '/index/hud.html',
    method: 'get',
    callbacks: [ [Function] ],
    keys: [],
    regexp: /^\/index\/hud\.html\/?$/i,
    params: [] 
},
params: [] }

I also tried deleting browser cache and everything (and changing browser) but it seems to really be express that add these parameters somehow... Anyone have an idea what is going on ?