diff --git a/modules/freemobile/backend.py b/modules/freemobile/backend.py
index 51e38ff3..473c2a95 100644
--- a/modules/freemobile/backend.py
+++ b/modules/freemobile/backend.py
@@ -78,4 +78,4 @@ class FreeMobileBackend(BaseBackend, ICapBill):
     def download_bill(self, bill):
         if not isinstance(bill, Bill):
             bill = self.get_bill(bill)
-        return self.browser.readurl(bill._url)
+        return self.browser.open(bill._url).content