diff --git a/proto/http.c b/proto/http.c
index 57655b78..87ee24a2 100644
--- a/proto/http.c
+++ b/proto/http.c
@@ -260,6 +260,7 @@ int uwsgi_proto_http_parser(struct wsgi_request *wsgi_req) {
 
 	len = read(wsgi_req->poll.fd, wsgi_req->proto_parser_buf + wsgi_req->proto_parser_pos, uwsgi.buffer_size - wsgi_req->proto_parser_pos);
 	if (len <= 0) {
+		uwsgi_log("errno = %d\n", errno);
 		free(wsgi_req->proto_parser_buf);
 		uwsgi_error("recv()");
 		return -1;