diff --git a/weboob/backends/aum/backend.py b/weboob/backends/aum/backend.py
index ee118a45..3b5bf1b9 100644
--- a/weboob/backends/aum/backend.py
+++ b/weboob/backends/aum/backend.py
@@ -133,7 +133,7 @@ class AuMBackend(BaseBackend, ICapMessages, ICapMessagesPost, ICapDating, ICapCh
             threads = self.browser.get_threads_list()
 
         for thread in threads:
-            if thread['member'].get('isBan', True):
+            if thread['member'].get('isBan', False):
                 with self.browser:
                     self.browser.delete_thread(thread['member']['id'])
                 continue
@@ -206,8 +206,8 @@ class AuMBackend(BaseBackend, ICapMessages, ICapMessagesPost, ICapDating, ICapCh
                     flags |= Message.IS_ACCUSED
 
             signature = u''
-            if mail['src']:
-                signature += u'Sent from my %s\n\n' % mail['src']
+            #if mail['src']:
+            #    signature += u'Sent from my %s\n\n' % mail['src']
             if mail['id_from'] in contacts:
                 signature += contacts[mail['id_from']].get_text()
 
@@ -245,7 +245,7 @@ class AuMBackend(BaseBackend, ICapMessages, ICapMessagesPost, ICapDating, ICapCh
             with self.browser:
                 threads = self.browser.get_threads_list()
             for thread in threads:
-                if thread['member'].get('isBan', True):
+                if thread['member'].get('isBan', False):
                     with self.browser:
                         self.browser.delete_thread(int(thread['member']['id']))
                     continue
@@ -382,7 +382,7 @@ class AuMBackend(BaseBackend, ICapMessages, ICapMessagesPost, ICapDating, ICapCh
             return contact
 
     def _get_partial_contact(self, contact):
-        if contact.get('isBan', True):
+        if contact.get('isBan', False):
             with self.browser:
                 self.browser.delete_thread(int(contact['id']))
             return None