diff --git a/README.md b/README.md
index d388b0a8..d6d69bc5 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # **NodeMCU** #
 version 0.9.5
 
+[![Join the chat at https://gitter.im/nodemcu/nodemcu-firmware](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/nodemcu/nodemcu-firmware?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![Build Status](https://travis-ci.org/nodemcu/nodemcu-firmware.svg)](https://travis-ci.org/nodemcu/nodemcu-firmware)  [![Download](https://img.shields.io/badge/download-~400k-orange.svg)](https://github.com/nodemcu/nodemcu-firmware/releases/latest)
 
 ###A lua based firmware for wifi-soc esp8266
diff --git a/app/lua/lauxlib.c b/app/lua/lauxlib.c
index 00e740be..e5c89ad5 100644
--- a/app/lua/lauxlib.c
+++ b/app/lua/lauxlib.c
@@ -659,13 +659,19 @@ typedef struct LoadFSF {
 static const char *getFSF (lua_State *L, void *ud, size_t *size) {
   LoadFSF *lf = (LoadFSF *)ud;
   (void)L;
+
+  if (L == NULL && size == NULL) // Direct mode check
+    return NULL;
+
   if (lf->extraline) {
     lf->extraline = 0;
     *size = 1;
     return "\n";
   }
+
   if (fs_eof(lf->f)) return NULL;
   *size = fs_read(lf->f, lf->buff, sizeof(lf->buff));
+
   return (*size > 0) ? lf->buff : NULL;
 }