diff --git a/src/tcp_connecter.cpp b/src/tcp_connecter.cpp
index ebd9b9da..559129e0 100644
--- a/src/tcp_connecter.cpp
+++ b/src/tcp_connecter.cpp
@@ -117,7 +117,7 @@ zmq::fd_t zmq::tcp_connecter_t::connect ()
 
         //  Assert that the error was caused by the networking problems
         //  rather than 0MQ bug.
-        zmq_assert (err == WSAECONNREFUSED);
+        zmq_assert (err == WSAECONNREFUSED || err == WSAETIMEDOUT);
 
         errno = err;
         return retired_fd;