diff --git a/modbus/mb_objects/include/mb_config.h b/modbus/mb_objects/include/mb_config.h
index a1fdf4c..0e67c79 100644
--- a/modbus/mb_objects/include/mb_config.h
+++ b/modbus/mb_objects/include/mb_config.h
@@ -160,9 +160,7 @@ extern "C" {
 #define MB_FUNC_READWRITE_HOLDING_ENABLED       (1)
 
 /*! @} */
-#ifdef __cplusplus
-}
-#endif
+
 
 #if MB_MASTER_RTU_ENABLED || MB_MASTER_ASCII_ENABLED || MB_MASTER_TCP_ENABLED
 /*! \brief If master send a broadcast frame, the master will wait time of convert to delay,