diff --git a/ethers/errors/encoding.nim b/ethers/errors/encoding.nim
index 72372eb..fda37d9 100644
--- a/ethers/errors/encoding.nim
+++ b/ethers/errors/encoding.nim
@@ -21,12 +21,12 @@ func decode*[E: SolidityError](_: type E, data: seq[byte]): ?!(ref E) =
     return failure "unable to decode " & $E & ": selector doesn't match"
   when compiles(E.arguments):
     without arguments =? E.decodeArguments(data), error:
-      return failure "unable to decode " & $E & ": " & error.msg
+      return failure "unable to decode arguments of " & $E & ": " & error.msg
     let message = "EVM reverted: " & $E & $arguments
     success (ref E)(msg: message, arguments: arguments)
   else:
     if data.len > 4:
-      return failure "unable to decode " & $E & ": unread trailing bytes found"
+      return failure "unable to decode: " & $E & ".arguments is not defined"
     let message = "EVM reverted: " & $E & "()"
     success (ref E)(msg: message)