diff --git a/src/runtime/error.rs b/src/runtime/error.rs
index 409d56d590d11d1e3fa2256275f917b7b72f6204..1284844b8dbbeb6f808f3c37c23095758a84ea32 100644
--- a/src/runtime/error.rs
+++ b/src/runtime/error.rs
@@ -4,6 +4,7 @@ use crate::common::*;
 pub enum ConnectError {
     BindFailed(SocketAddr),
     UdpConnectFailed(SocketAddr),
+    TcpInvalidConnect(SocketAddr),
     PollInitFailed,
     Timeout,
     PollFailed,