diff --git a/src/ConnStore.hs b/src/ConnStore.hs
index 6a8bf6946..0cdf84af7 100644
--- a/src/ConnStore.hs
+++ b/src/ConnStore.hs
@@ -34,3 +34,8 @@ newConnection rKey =
       senderKey = Nothing,
       status = ConnActive
     }
+
+-- class MonadMsgStore s m where
+--   addMsg :: s -> SenderId -> MsgBody -> m (Either ErrorType ())
+--   getMsg :: s -> RecipientId -> m (Either ErrorType Message)
+--   delMsg :: s -> RecipientId -> m (Either ErrorType ())
diff --git a/src/Transmission.hs b/src/Transmission.hs
index e8c7c4197..fa1e9c3fb 100644
--- a/src/Transmission.hs
+++ b/src/Transmission.hs
@@ -123,7 +123,7 @@ type Timestamp = Encoded
 
 type MsgBody = B.ByteString
 
-data ErrorType = UNKNOWN | PROHIBITED | SYNTAX Int | AUTH | INTERNAL deriving (Show, Eq)
+data ErrorType = UNKNOWN | PROHIBITED | SYNTAX Int | SIZE | AUTH | INTERNAL deriving (Show, Eq)
 
 errBadParameters :: Int
 errBadParameters = 2
@@ -139,6 +139,3 @@ errNoConnectionId = 5
 
 errMessageBody :: Int
 errMessageBody = 6
-
-errMessageBodySize :: Int
-errMessageBodySize = 7
diff --git a/src/Transport.hs b/src/Transport.hs
index 33931a72f..4c49c5937 100644
--- a/src/Transport.hs
+++ b/src/Transport.hs
@@ -152,5 +152,5 @@ tGet fromParty h = do
           Just size -> do
             body <- getBytes h size
             s <- getLn h
-            return if null s then Right body else Left $ SYNTAX errMessageBodySize
+            return if null s then Right body else Left SIZE
           Nothing -> return . Left $ SYNTAX errMessageBody
diff --git a/tests/Test.hs b/tests/Test.hs
index caa839706..f5aca4a7b 100644
--- a/tests/Test.hs
+++ b/tests/Test.hs
@@ -143,7 +143,7 @@ syntaxTests = do
     it "many parameters" $ [("123", "1", "SEND 11 hello")] >#> [("", "1", "ERROR SYNTAX 2")]
     it "no connection ID" $ [("123", "", "SEND :hello")] >#> [("", "", "ERROR SYNTAX 5")]
     it "bad message body" $ [("123", "1", "SEND hello")] >#> [("", "1", "ERROR SYNTAX 6")]
-    it "bigger body" $ [("123", "1", "SEND 4\nhello\n")] >#> [("", "1", "ERROR SYNTAX 7")]
+    it "bigger body" $ [("123", "1", "SEND 4\nhello\n")] >#> [("", "1", "ERROR SIZE")]
   describe "broker response not allowed" do
     it "OK" $ [("123", "1", "OK")] >#> [("", "1", "ERROR PROHIBITED")]
   where