diff --git a/weboob/backends/aum/browser.py b/weboob/backends/aum/browser.py
index 3d31096e..2cf8cbb6 100644
--- a/weboob/backends/aum/browser.py
+++ b/weboob/backends/aum/browser.py
@@ -210,7 +210,7 @@ class AuMBrowser(BaseBrowser):
 
     @pageaccess
     def post_mail(self, id, content):
-        if not self.is_on_page(ContactThreadPage) or self.page.id != int(id) or full:
+        if not self.is_on_page(ContactThreadPage) or self.page.id != int(id):
             self.page.open_thread_page(id)
         self.page.post(content)