URL with characters in Webview Android

I have to display a page on an android webview using a URL returned by the server. The problem lies at the end of the URL where there are two dot (..) but when I pass the string to the webview these points are ignored and it is not possible to open load the content. Any suggestions on how to proceed? Exemplifying:

wvBillet = (WebView) findViewById(R.id.wb_billet);
 WebSettings ws = wvBillet.getSettings();
 ws.setJavaScriptEnabled(true);
 ws.setSupportZoom(false);
 ws.setTextZoom(0);
 wvBillet.loadUrl(urlbillet);

The URL in question would look like this:

When I call the webview and step the URL it reads up before the .. - Does anyone have any suggestions of what can be done?