diff --git a/Mailnag/daemon/mails.py b/Mailnag/daemon/mails.py
index fecfd91..594c01f 100644
--- a/Mailnag/daemon/mails.py
+++ b/Mailnag/daemon/mails.py
@@ -89,7 +89,7 @@ class MailCollector:
 		
 		# sort mails
 		if sort:
-			mail_list = mail_list.sort(key = lambda m: m.datetime, reverse = True)
+			mail_list.sort(key = lambda m: m.datetime, reverse = True)
 		
 		return mail_list
 
@@ -229,7 +229,7 @@ class MailSyncer:
 			for acc_id in self._mails_by_account:
 				for mail_id in self._mails_by_account[acc_id]:
 					self._mail_list.append(self._mails_by_account[acc_id][mail_id])
-			self._mail_list = self._mail_list.sort(key = lambda m: m.datetime, reverse = True)
+			self._mail_list.sort(key = lambda m: m.datetime, reverse = True)
 		
 		return self._mail_list
 
diff --git a/Mailnag/plugins/libnotifyplugin.py b/Mailnag/plugins/libnotifyplugin.py
index e2b7f32..10de0bb 100644
--- a/Mailnag/plugins/libnotifyplugin.py
+++ b/Mailnag/plugins/libnotifyplugin.py
@@ -259,7 +259,7 @@ class LibNotifyPlugin(Plugin):
 	def _notify_single(self, mails):
 		# In single notification mode new mails are
 		# added to the *bottom* of the notification list.
-		mails = mails.sort(key = lambda m: m.datetime, reverse = False)
+		mails.sort(key = lambda m: m.datetime, reverse = False)
 		
 		for mail in mails:
 			n = self._get_notification(self._get_sender(mail), mail.subject, "mail-unread")