diff --git a/targets/nuttx-stm32f4/jerry_main.c b/targets/nuttx-stm32f4/jerry_main.c
index b7e32c4ab..fd8b15ba9 100644
--- a/targets/nuttx-stm32f4/jerry_main.c
+++ b/targets/nuttx-stm32f4/jerry_main.c
@@ -113,6 +113,70 @@ read_file (const char *file_name, /**< source code */
   return (const uint8_t *) buffer;
 } /* read_file */
 
+/**
+ * Provide the 'assert' implementation for the engine.
+ *
+ * @return true - if only one argument was passed and the argument is a boolean true.
+ */
+static jerry_value_t
+assert_handler (const jerry_value_t func_obj_val __attribute__((unused)), /**< function object */
+                const jerry_value_t this_p __attribute__((unused)), /**< this arg */
+                const jerry_value_t args_p[], /**< function arguments */
+                const jerry_length_t args_cnt) /**< number of function arguments */
+{
+  if (args_cnt == 1
+      && jerry_value_is_boolean (args_p[0])
+      && jerry_get_boolean_value (args_p[0]))
+  {
+    return jerry_create_boolean (true);
+  }
+  else
+  {
+    jerry_port_log (JERRY_LOG_LEVEL_ERROR, "Script Error: assertion failed\n");
+    exit (JERRY_STANDALONE_EXIT_CODE_FAIL);
+  }
+} /* assert_handler */
+
+/**
+ * Provide the 'gc' implementation for the engine.
+ *
+ * @return undefined.
+ */
+static jerry_value_t
+gc_handler (const jerry_value_t func_obj_val __attribute__((unused)), /**< function object */
+            const jerry_value_t this_p __attribute__((unused)), /**< this arg */
+            const jerry_value_t args_p[] __attribute__((unused)), /**< function arguments */
+            const jerry_length_t args_cnt __attribute__((unused))) /**< number of function arguments */
+{
+  jerry_gc ();
+  return jerry_create_undefined ();
+} /* gc_handler */
+
+/**
+ * Register a JavaScript function in the global object.
+ */
+static void
+register_js_function (const char *name_p, /**< name of the function */
+                      jerry_external_handler_t handler_p) /**< function callback */
+{
+  jerry_value_t global_obj_val = jerry_get_global_object ();
+
+  jerry_value_t function_val = jerry_create_external_function (handler_p);
+  jerry_value_t function_name_val = jerry_create_string ((const jerry_char_t *) name_p);
+  jerry_value_t result_val = jerry_set_property (global_obj_val, function_name_val, function_val);
+
+  jerry_release_value (function_name_val);
+  jerry_release_value (function_val);
+  jerry_release_value (global_obj_val);
+
+  if (jerry_value_has_error_flag (result_val))
+  {
+    jerry_port_log (JERRY_LOG_LEVEL_WARNING, "Warning: failed to register '%s' method.", name_p);
+  }
+
+  jerry_release_value (result_val);
+} /* register_js_function */
+
 /**
  * JerryScript log level
  */
@@ -195,6 +259,10 @@ int jerry_main (int argc, char *argv[])
   }
 
   jerry_init (flags);
+
+  register_js_function ("assert", assert_handler);
+  register_js_function ("gc", gc_handler);
+
   jerry_value_t ret_value = jerry_create_undefined ();
 
   for (i = 0; i < files_counter; i++)