diff --git a/hub/common.py b/hub/common.py
index 6579d6f..fef176f 100644
--- a/hub/common.py
+++ b/hub/common.py
@@ -347,14 +347,9 @@ INVALID_ARGS = -32602
 
 
 class CodeMessageError(Exception):
-
-    @property
-    def code(self):
-        return self.args[0]
-
-    @property
-    def message(self):
-        return self.args[1]
+    def __init__(self, code: int, message: str):
+        self.code = code
+        self.message = message
 
     def __eq__(self, other):
         return (isinstance(other, self.__class__) and
@@ -382,7 +377,6 @@ class RPCError(CodeMessageError):
     pass
 
 
-
 class DaemonError(Exception):
     """Raised when the daemon returns an error in its results."""
 
diff --git a/hub/herald/session.py b/hub/herald/session.py
index 953e6a9..8400e75 100644
--- a/hub/herald/session.py
+++ b/hub/herald/session.py
@@ -1750,7 +1750,7 @@ class LBRYElectrumX(asyncio.Protocol):
             if not verbose:
                 return raw_tx.hex()
             return self.coin.transaction(raw_tx).as_dict(self.coin)
-        return RPCError("No such mempool or blockchain transaction.")
+        return RPCError(BAD_REQUEST, "No such mempool or blockchain transaction.")
 
     def _get_merkle_branch(self, tx_hashes, tx_pos):
         """Return a merkle branch to a transaction.