diff --git a/NFC.h b/NFC.h
index b997490..c6a2e17 100644
--- a/NFC.h
+++ b/NFC.h
@@ -5,3 +5,11 @@
  *      Author: Yeti
  */
 
+#ifndef NFC_C_
+#define NFC_C_
+
+#include "typedefExtention.h"
+
+uchar* NFCAvalable();
+
+#endif
\ No newline at end of file