diff --git a/jerry-libm/jerry-libm-internal.h b/jerry-libm/jerry-libm-internal.h
index 073fb937aa..8b75061a47 100644
--- a/jerry-libm/jerry-libm-internal.h
+++ b/jerry-libm/jerry-libm-internal.h
@@ -34,7 +34,8 @@
      defined (i486) || defined (__i486) || defined (__i486__) || \
      defined (intel) || defined (x86) || defined (i86pc) || \
      defined (__alpha) || defined (__osf__) || \
-     defined (__x86_64__) || defined (__arm__) || defined (__aarch64__))
+     defined (__x86_64__) || defined (__arm__) || defined (__aarch64__) || \
+     defined (__xtensa__))
 #define __LITTLE_ENDIAN
 #endif
 
diff --git a/targets/esp8266/user/user_main.c b/targets/esp8266/user/user_main.c
index 739ab3c563..48fd263172 100644
--- a/targets/esp8266/user/user_main.c
+++ b/targets/esp8266/user/user_main.c
@@ -43,15 +43,22 @@ static int jerry_task_init(void) {
 
   js_entry();
 
-  /* run js files */
+  /* run rest of the js files first */
   show_free_mem(2);
-  for (int src = 0; js_codes[src].source; src++) {
+  for (int src = 1; js_codes[src].source; src++) {
     int retcode = js_eval(js_codes[src].source, js_codes[src].length);
     if (retcode != 0) {
       printf("js_eval failed code(%d) [%s]\r\n", retcode, js_codes[src].name);
-      return -2;
+      return -1;
     }
   }
+
+  /* run main.js */
+  int retcode = js_eval(js_codes[0].source, js_codes[0].length);
+  if (retcode != 0) {
+    printf("js_eval failed code(%d) [%s]\r\n", retcode, js_codes[0].name);
+    return -2;
+  }
   show_free_mem(3);
   return 0;
 }