diff --git a/lib/nntp/tiny/session.py b/lib/nntp/tiny/session.py
index 58c6504..27a50ba 100644
--- a/lib/nntp/tiny/session.py
+++ b/lib/nntp/tiny/session.py
@@ -318,7 +318,7 @@ class Session():
                 newsgroup_message,
                 message
             where
-                message.id = newsgroup_message.id
+                message.id = newsgroup_message.message_id
                 and newsgroup_message.newsgroup_id = ?
         """
 
@@ -550,7 +550,7 @@ class Session():
                     newsgroup_message,
                     message
                 where
-                    message.id = newsgroup_message.id
+                    message.id = newsgroup_message.message_id
                     and newsgroup_message.newsgroup_id = ?
             """
 
@@ -742,7 +742,7 @@ class Session():
 
     def _cmd_post(self):
         if not self.perms & UserPermission.POST:
-            self.respond(ResponseCode.NNTP_POST_PROHIBITED
+            self.respond(ResponseCode.NNTP_POST_PROHIBITED)
 
         self.respond(ResponseCode.NNTP_INQUIRY_ARTICLE)
 
@@ -769,7 +769,7 @@ class Session():
 
     def _cmd_ihave(self, message_id):
         if not self.perms & UserPermission.POST:
-            self.respond(ResponseCode.NNTP_POST_PROHIBITED
+            self.respond(ResponseCode.NNTP_POST_PROHIBITED)
 
         sql = """
             select