diff --git a/README b/README
index 461cabc..9ddcd53 100644
--- a/README
+++ b/README
@@ -1,6 +1,11 @@
 libssh2 - SSH2 library
 ======================
 
+Version 0.14
+------------
+
+  Allow socket_fd == 0 in libssh2_session_startup(). (puudeli)
+
 Version 0.13
 ------------
 
diff --git a/src/session.c b/src/session.c
index 939e62b..72240f8 100644
--- a/src/session.c
+++ b/src/session.c
@@ -298,9 +298,9 @@ LIBSSH2_API int libssh2_session_startup(LIBSSH2_SESSION *session, int socket)
 #ifdef LIBSSH2_DEBUG_TRANSPORT
 	_libssh2_debug(session, LIBSSH2_DBG_TRANS, "session_startup for socket %d", socket);
 #endif
-	if (socket <= 0) {
+	if (socket < 0) {
 		/* Did we forget something? */
-		libssh2_error(session, LIBSSH2_ERROR_SOCKET_NONE, "No socket provided", 0);
+		libssh2_error(session, LIBSSH2_ERROR_SOCKET_NONE, "Bad socket provided", 0);
 		return LIBSSH2_ERROR_SOCKET_NONE;
 	}
 	session->socket_fd = socket;