diff --git a/src/flb_io.c b/src/flb_io.c
index 75670c74f0c..a8a73e4279e 100644
--- a/src/flb_io.c
+++ b/src/flb_io.c
@@ -167,7 +167,7 @@ static int net_io_connect_async(struct flb_upstream *u,
          * means a failure.
          */
         err = flb_socket_error(u_conn->fd);
-        if (!FLB_EINPROGRESS(err)) {
+        if (!FLB_EINPROGRESS(err) && err != 0) {
             flb_errno();
             flb_error("[io] connection #%i failed to: %s:%i",
                       u_conn->fd, u->tcp_host, u->tcp_port);