diff --git a/weboob/backends/aum/backend.py b/weboob/backends/aum/backend.py
index 964c5d44..b1114e69 100644
--- a/weboob/backends/aum/backend.py
+++ b/weboob/backends/aum/backend.py
@@ -431,7 +431,7 @@ class AuMBackend(BaseBackend, ICapMessages, ICapMessagesPost, ICapDating, ICapCh
                 break
 
         if url:
-            browser = self.BROWSER('')
+            browser = self.create_browser('')
             browser.openurl(url)
             return True